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: Autumn 2015 IL Migration Report  ( 7026 )

Henry Griffin

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Autumn 2015 IL Migration Report
« : August 25, 2015, 08:48:57 PM »
From now on, when I post these reports this fall, I will just reply to this one...

Hello birding friends,

To view this report in blog format with imbedded images, visit "Arrivals and Influxes:"
ilmigration.blogspot.com

Tomorrow (Wednesday) birders in far northern and northeastern Illinois should definitely GO BIRDING at "migrant traps," especially along Lake Michigan shoreline locations.

Another lighter migration forecast than usual tonight because of a busy schedule. Northerly winds are ushering light-to-moderate concentrations of migrants into our state tonight.
Looking from the current radar, Illinois is experiencing light migrations of birds statewide.
http://tempest.aos.wisc.edu/radar/us3comp.gif

Concentrations appear to be a bit heavier in northeast Illinois and Wisconsin looks like it currently has moderate to locally heavy concentrations of migrants in the sky tonight - and some of those denser concentrations may make it into northern and especially northeastern Illinois in the morning.

As we saw this morning (I had 8 new warblers for the season in my backyard alone!), new arrivals and influxes, especially in the songbird department, will also be apparent tomorrow morning state-wide but especially in far-northern and northeastern locations of the state. I STRONGLY recommend checking any Lake Michigan shoreline "migrant traps" tomorrow morning because it looks like tomorrow will be a good day for new migrants, and possibly locally high concentrations of them.

Tomorrow (Wednesday), winds will remain northerly; however, they will shift to roughly southerly by Wednesday night which will probably create a lull in migration. It looks light winds will remain pretty much southerly until Saturday night, which will probably result in a big push of migrants arriving Sunday morning. This is good news because I lead a bird walk that morning!

To predict exactly which species you are likely to find and when you are likely to find them, visit Birdcast's regional migration forecast as well as eBird's species occurrence chart for Illinois.
Birdcast's regional migration forecast: http://birdcast.info/forecast/regional-migration-forecast-21-28-august-2015/#MidwestNortheast
eBird's species occurrence chart: https://secure.birds.cornell.edu/cassso/login?service=https%3A%2F%2Febird.org%2Febird%2Flogin%2Fcas%3Fportal%3Debird&gateway=true

So definitely GO BIRDING tomorrow morning if you are in far northern or northeastern Illinois!

Henry
trumpetswan@comcast.net
ilmigration.blogspot.com
worldbirding.travellerspoint.com
sites.google.com/site/opbirdwalks/home

--
Henry Griffin

Henry Griffin

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Re: Autumn 2015 IL Migration Report
« #1 : August 26, 2015, 08:34:46 PM »
For August 27, 2015:

Hello birding friends,

To view this forecast in blog format with imbedded images, visit "Arrivals and Influxes:"
ilmigration.blogspot.com

Tonight Illinois is experiencing variable wind patterns that are easterly and shifting to south-southwesterly. This means that migration is very light and patchy tonight, as shown by the current radar.
http://tempest.aos.wisc.edu/radar/us3comp.gif

The very light and almost dotted blue radar noise is indicating that migrants are responding negatively to the shifting, and ultimately, unfavorable, winds tonight by migrating in lesser densities than the last two nights.

Although the majority of Illinois looks like it will be quiet tomorrow, some very localized pockets of new arrivals and influxes may show up in far northern as well as the southernmost quarter of the state, the two areas where the radar is picking up the "most" (relatively speaking) noise tonight.

Well, folks, the wind forecast is looking pretty...interesting. Roughly southerly winds should dominate until Saturday night, when there is a brief shift in winds to the west-northwest which could actually bring a big push of migrants Sunday morning given the wind forecasts leading up to then. Then, winds appear to stay southerly until, well, a week from Friday night which is when the Weather Channel's 10-day forecast runs out! :-|

So, if there is one morning to get out in the near future, it will be this Sunday morning. To predict which species one is likely to encounter in the next few days, consult Birdcast's regional migration forecast as well as eBird's species occurrence chart  for Illinois.
Birdcast's forecast: http://birdcast.info/forecast/regional-migration-forecast-21-28-august-2015/#MidwestNortheast
eBird's occurrence chart: http://ebird.org/ebird/GuideMe?src=changeDate&getLocations=states&states=US-IL&parentState=US-IL&reportType=location&monthRadio=on&bMonth=01&eMonth=12&bYear=1900&eYear=2014&continue.x=76&continue.y=13&continue=Continue

Good birding! I know I am enjoying migration so far...I have already detected 9 warbler species in my backyard this season! Hope you're finding some avian goodies, too!

Henry
trumpetswan@comcast.net
ilmigration.blogspot.com
worldbirding.travellerspoint.com
sites.google.com/site/opbirdwalks/home

--
Henry Griffin

Henry Griffin

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Re: Autumn 2015 IL Migration Report
« #2 : August 27, 2015, 08:24:20 PM »
For August 28, 2015:

Hello birding friends,

To view this report in blog format with imbedded images, please visit "Arrivals and Influxes:"
ilmigration.blogspot.com

Another short report tonight. Due to unfavorable southeasterly winds, Illinois is experiencing little, if any at all, bird migration in our skies. This is evidenced by the extremely patchy blue areas on Illinois on the current radar.
http://tempest.aos.wisc.edu/radar/us3comp.gif

For a slightly more detailed outlook for tomorrow morning, Illinois should not be expecting many arrivals and influxes except in the lowest southern quarter of the state, which may receive light concentrations.

Winds appear to be unfavorable for southbound migrants until Saturday night; however, rain is in the forecast for Saturday night so it is debatable as to whether they will even migrate in larger numbers then because of possible storm systems. Thankfully, winds look somewhat northerly and without rain Sunday night, so hopefully Monday will also be a good morning to find migrants. For a more detailed look at the current winds, click here:
http://earth.nullschool.net/#current/wind/surface/level/orthographic=-89.19,40.03,2455

For detailed outlooks at what birds you may find over the next few days, visit:
Birdcast's regional migration forecast: http://birdcast.info/forecast/regional-migration-forecast-21-28-august-2015/#MidwestNortheast
eBird's Illinois species occurrence map: http://ebird.org/ebird/GuideMe?src=changeDate&getLocations=states&states=US-IL&parentState=US-IL&reportType=location&monthRadio=on&bMonth=01&eMonth=12&bYear=1900&eYear=2014&continue.x=76&continue.y=13&continue=Continue

Stay tuned!

Henry
trumpetswan@comcast.net
ilmigration.blogspot.com
worldbirding.travellerspoint.com
sites.google.com/site/opbirdwalks/home

--
Henry Griffin

Henry Griffin

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Re: Autumn 2015 IL Migration Report
« #3 : August 28, 2015, 08:46:50 PM »
For August 29, 2015:

Hello birding friends,

*Please excuse any formatting issues; I was navigating some malfunctions trying to transfer this long report from blog to post form.

To view this report in blog format with imbedded images, please visit "Arrivals and Influxes:"
ilmigration.blogspot.com

This will be a more detailed migration report since it is the weekend (...finally!) and there is a bit more to talk about weather-wise. Tonight Illinois is experiencing little to no migration whatsoever. Kind of like last night, the far southern tip of Illinois may see some evidence of a bit of movement tomorrow morning but in very light and local concentrations.

This is due to southeasterly winds which are currently flowing across the state ahead of a frontal boundary weather system that will move in later tonight and into tomorrow. This system can be easily seen on the current radar:
http://tempest.aos.wisc.edu/radar/us3comp.gif

Tomorrow (Saturday) night has a very interesting and uncertain migration forecast. There are many factors to consider:
1. Winds will be flowing east-northeasterly for the first time in quite a few days, possibly spurring on migrants that have been waiting for an opportunity to fly.
2. The skies are forecast to be overcast which could be problematic because some studies suggest that migrating birds rely on the pattern of the stars to fly in the right direction. This could possibly lessen the density of migration tomorrow night.
3. Finally, if you look at the current radar, you will see that some areas behind the frontal boundary such as Nebraska and Kansas are experiencing moderate to heavy migration, which we hope will hold true for Illinois tomorrow night!

So I don't really know what to expect for Sunday morning; however, I suspect that there will be quite an uptick in arrivals and influxes. I will monitor the situation closely and and an even more thorough analyzation should be expected in tomorrow night's report.

You can see the southeasterly winds moving across Illinois shown on the current wind map.
http://earth.nullschool.net/#current/wind/surface/level/orthographic=-89.19,40.03,2455

Birdcast just came out with their August 28 - October 4 migration forecast, which can be seen here: http://birdcast.info/forecast/regional-migration-forecast-28-august-4-september-2015/

This is a passage copied from the forecast which can give you an idea of which species might be moving through our area this week:

"Generally unfavorable migration conditions prevail...this week, with those pulses of movements that occur featuring Green Heron, Least Sandpiper, Short-billed Dowitcher...Common Yellowthroat, and Clay-colored Sparrow...the East sees a return to more summer like conditions until more favorable conditions and associated moderate flights of Common Nighthawk, Ruby-throated Hummingbird, Red-eyed Vireo, Blue-winged Warbler, Blackburnian Warbler, and Chipping Sparrow come after the middle of the week."

Also, eBird.org's Illinois species occurrence map is always a fantastic resource to see historically which species are moving through at this exact time.
https://ebird.org/ebird/login/cas?portal=ebird&ticket=ST-349137-A4ilxCmYDmHdbRll3eXX-secure.birds1

So that's it folks. Nonexistent to a negligible amount of arrivals and influxes will occur tomorrow (Saturday) morning, but quite possibly a large push of migrants might come into the state for Sunday morning.

Good birding!

Henry
trumpetswan@comcast.net
ilmigration.blogspot.com
worldbirding.travellerspoint.com
sites.google.com/site/opbirdwalks/home

--
Henry Griffin

Henry Griffin

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Re: Autumn 2015 IL Migration Report
« #4 : August 29, 2015, 08:40:55 PM »
For August 30, 2015:

Hello birding friends,

To view this report in blog format with imbedded images, please visit "Arrivals and Influxes:"
ilmigration.blogspot.com

Tonight - as I mentioned last night - is indeed experiencing some very irregular migration patterns. First of all, the frontal boundary that passed through today left behind a complicated wind situation for Illinois. One might be able to grasp from the current wind map that winds over the northern third of Illinois are light and northeasterly while the winds over the southern two thirds are of a higher speed and roughly southerly, converging around the Illinois River area and flowing towards the east from there.
http://earth.nullschool.net/#current/wind/surface/level/orthographic=-89.19,40.03,2455

These complicated winds are making for patchy and irregular migration tonight. From the current national composite radar, it appears that most of Illinois will experience pretty light migration tonight while areas in the northwest, west-central, and southern parts of the state may have slightly more evidence of arrivals and influxes tomorrow morning.
http://tempest.aos.wisc.edu/radar/us3comp.gif

As winds continue to shift overnight; however, migration could, as well, so it would be worth checking those migrant traps in any part of the state tomorrow morning.

I hope this is somewhat clear! Some nights, the weather and resulting migration patterns are just so complicated that it can be a challenge forecasting them. To see exactly which bird species are passing through our area, check out these two very helpful resources:
eBird's Illinois species occurrence map: https://secure.birds.cornell.edu/cassso/login?service=https%3A%2F%2Febird.org%2Febird%2Flogin%2Fcas%3Fportal%3Debird&gateway=true
Birdcast's regional migration forecast: http://birdcast.info/forecast/regional-migration-forecast-28-august-4-september-2015/

So get out there tomorrow, wherever you are in the state, because although it may not be the biggest push of migrants in the world, it will be possible to find some new arrivals and influxes!

Good birding,

Henry
trumpetswan@comcast.net
ilmigration.blogspot.com
worldbirding.travellerspoint.com
sites.google.com/site/opbirdwalks/home

--
Henry Griffin

Henry Griffin

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Re: Autumn 2015 IL Migration Report
« #5 : August 30, 2015, 08:02:27 PM »
For August 31, 2015:

Hello birding friends,

A shorter report tonight since it is getting late and I have school tomorrow. Although enveloped in southeasterly winds, Illinois is currently experiencing pretty uniform light-to-moderate migration. Concentrations, as seen from the current national composite radar, seem to be a bit higher in the far northern part of the state so tomorrow you should go birding, especially if you live in northern Illinois.
http://tempest.aos.wisc.edu/radar/us3comp.gif

Along with abnormally warm temperatures, winds appear to stay southerly until a week from tomorrow (Monday, September 7) so after tonight there probably won't be any significant new pushes of arrivals and influxes until about then.

So tomorrow you should go birding - you might find some good migrants!

Helpful resources to reference for which species you are likely to encounter and when:
Birdcast's regional migration forecast: http://birdcast.info/forecast/regional-migration-forecast-28-august-4-september-2015/
eBird's Illinois species occurrence map: http://ebird.org/ebird/GuideMe?src=changeDate&getLocations=states&states=US-IL&parentState=US-IL&reportType=location&monthRadio=on&bMonth=01&eMonth=12&bYear=1900&eYear=2014&continue.x=76&continue.y=13&continue=Continue

Go birding!

Henry
trumpetswan@comcast.net
ilmigration.blogspot.com
worldbirding.travellerspoint.com
sites.google.com/site/opbirdwalks/

--
Henry Griffin

Henry Griffin

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Re: Autumn 2015 IL Migration Report
« #6 : August 31, 2015, 08:33:46 PM »
For September 1, 2015:

Hello birding friends,

To view this report in blog format with imbedded images, visit "Arrivals and Influxes:"
ilmigration.blogspot.com

As we can see from the relative dearth of radar noise tonight on the current national composite radar, migration over Illinois is very light because birds are battling southerly headwinds.
http://tempest.aos.wisc.edu/radar/us3comp.gif

The eastern third and southern third of Illinois should expect marginally better avian turnover than the rest of the state tomorrow morning, but overall things should be slow. That's it for today; short and sweet because there is not much activity on which to report.

Because winds are forecast to be unfavorable until NEXT Monday night, very little migration activity should happen until then.

Predict which species you will see and exactly when at:
Birdcast's regional migration forecast: http://birdcast.info/forecast/regional-migration-forecast-28-august-4-september-2015/
and
eBird's Illinois species occurrence map: https://secure.birds.cornell.edu/cassso/login?service=https%3A%2F%2Febird.org%2Febird%2Flogin%2Fcas%3Fportal%3Debird&gateway=true

Good birding!

Henry (Oak Park, Cook)
trumpetswan@comcast.net
ilmigration.blogspot.com
worldbirding.travellerspoint.com
sites.google.com/site/opbirdwalks/

--
Henry Griffin

Henry Griffin

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Re: Autumn 2015 IL Migration Report
« #7 : September 01, 2015, 09:01:03 PM »
Having trouble copying tonight's report to IBF, so please view it here on my blog "Arrivals and Influxes:" ilmigration.blogspot.com

Good birding,

Henry

Henry Griffin

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Re: Autumn 2015 IL Migration Report
« #8 : September 02, 2015, 07:41:34 PM »
For September 3, 2015:

Hello birding friends,

Sorry about some copy/pasting and link issues I have had recently with these migration reports. To view this report in blog format with imbedded images, please visit "Arrivals and Influxes:"
ilmigration.blogspot.com

As evidenced by the current national composite radar, Illinois is once again experiencing only marginal avian movements over our skies tonight. It appears that roughly the eastern half of Illinois is receiving slightly more movement than the western half tonight, but wherever you are in the state tomorrow, bird movement should not be that evident.
http://tempest.aos.wisc.edu/radar/us3comp.gif

Here is what we should be expecting in the near future: winds will remain southerly, as evidenced by all of the hot temperatures in our forecast, until Monday night. Next Tuesday morning should receive a big push of migrants.

I will be reporting again tomorrow and then I will take Friday, Saturday, and Sunday nights off because I will be in Michigan over Labor Day weekend and without internet access for posting. I will make sure to post Monday night so that I can update everyone on what is looking to be a very productive next Tuesday morning.

As evidenced by recent IBET and IBF reports, new species are coming into our area. Stilt Sandpipers are more "common" (relatively speaking) than some other of the more uncommon shorebirds typical of early migration, warblers are slowly but surely increasing and spreading southward throughout Illinois, and some rarities like the Swallow-tailed Kite have even been appearing! To predict exactly which species you will see, please visit:
Birdcast's regional migration forecast: http://birdcast.info/forecast/regional-migration-forecast-28-august-4-september-2015/
and
eBird's Illinois species occurrence chart: http://ebird.org/ebird/GuideMe?src=changeDate&getLocations=states&states=US-IL&parentState=US-IL&reportType=location&monthRadio=on&bMonth=01&eMonth=12&bYear=1900&eYear=2014&continue.x=76&continue.y=13&continue=Continue

Good birding!

Henry (Oak Park, Cook)
trumpetswan@comcast.net
ilmigration.blogspot.com
worldbirding.travellerspoint.com
sites.google.com/site/opbirdwalks/

--
Henry Griffin

Henry Griffin

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Re: Autumn 2015 IL Migration Report
« #9 : September 03, 2015, 08:04:06 PM »
For September 4, 2015:

Hello birding friends,

To view this report in blog format with imbedded images, please visit "Arrivals and Influxes:"
ilmigration.blogspot.com

HEAVY MIGRATION tonight for CHICAGO & NORTHEAST Illinois as evidenced by green radar noise on the current national composite radar, indicating 300 - 3000 migrant birds per cubic kilometer - that's a lot of birds. Get out to Montrose Point, North Pond, Jackson Park, or other lakefront "migrant traps" tomorrow morning.
http://tempest.aos.wisc.edu/radar/us3comp.gif

MODERATE to HEAVY MIGRATION for the entire northern 1/5 (one fifth) of Illinois because of large green areas of radar noise on the radar in Wisconsin just north of much of the IL-WI border.

LIGHT to MODERATE MIGRATION for the rest of the state; that is, the southern 4/5 (four fifths) of Illinois.

Surprise northerly winds have come into much of Illinois briefly tonight, spurring on a wealth of bird migration, especially in northern areas of the state.

I learned that I will be leaving for Michigan on Saturday, so I will make one longer post tomorrow (Friday) night for Saturday, Sunday, and Monday mornings. Then, I will start posting regularly again on Monday night.

Changes in the wind forecast call for possible moderate migration with easterly winds tomorrow (Friday) night and then a lull in migration setting in with the return of southerly winds and high temperatures for a few days. Tuesday morning looks like it should be good with regards to new arrivals and influxes. Here is the run-down for the next few days in Illinois:

Friday morning: Birders in northern, especially northeastern Illinois should GO BIRDING!
Saturday morning: Another favorable morning; go birding again!
Sunday morning: should be quieter
Monday morning: also quiet
Tuesday morning: possibly productive morning; go birding!

I really hope birders in the Chicagoland area as well as much of northern Illinois get out and go birding tomorrow (Friday) morning!

To predict which species you are likely to find and exactly when, please reference:
Birdcast's regional migration forecast: http://birdcast.info/forecast/regional-migration-forecast-28-august-4-september-2015/
and
eBird's Illinois species occurrence map: http://ebird.org/ebird/GuideMe?src=changeDate&getLocations=states&states=US-IL&parentState=US-IL&reportType=location&monthRadio=on&bMonth=01&eMonth=12&bYear=1900&eYear=2014&continue.x=76&continue.y=13&continue=Continue

Go birding!

Henry (Oak Park, Cook County)
trumpetswan@comcast.net
ilmigration.blogspot.com
worldbirding.travellerspoint.com
sites.google.com/site/opbirdwalks/

--
Henry Griffin

Henry Griffin

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Re: Autumn 2015 IL Migration Report
« #10 : September 04, 2015, 09:26:03 PM »
For September 5 - September 7:

Hello birding friends,

To view this post in blog format with imbedded images, please visit "Arrivals and Influxes:"
ilmigration.blogspot.com

This post will be for Saturday, Sunday, and Monday, September 5 - 7 (I will be in Michigan and without access to internet over the weekend).

Tonight, Illinois is experiencing uniformly light to moderate migration, nothing out of the ordinary. View the current national composite radar here: http://tempest.aos.wisc.edu/radar/us3comp.gif

This should continue for the next two nights, so unless the forecasted southerly winds shift while I am away, there will have probably been nothing noteworthy to report anyway. Here is the daily migration run-down until Wednesday morning, which is the next morning when a big turnover of birds should be expected.

Saturday morning: not many arrivals/influxes
Sunday morning: same
Monday morning: same
Tuesday morning: same
Wednesday morning: probable big push of migrants

So the next time I will post will be Monday night, and if wind forecasts remain constant, the next turnover of migrants should be evident on Wednesday morning.

Have a great Labor Day weekend!

Henry (Oak Park, Cook County)
trumpetswan@comcast.net
ilmigration.blogspot.com
worldbirding.travellerspoint.com
sites.google.com/site/

--
Henry Griffin

Henry Griffin

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Re: Autumn 2015 IL Migration Report
« #11 : September 07, 2015, 07:53:03 PM »
For September 8, 2015:

Hello birding friends,

To view this report in blog format with imbedded images, please visit "Arrivals and Influxes:"
ilmigration.blogspot.com

This migration report is dedicated to Liz Day, a very kind birder from Indianapolis, IN who recently passed away. She will be missed and my connection to her was that she emailed me, complimenting me on these reports on August 22, so just last month. In that email, she also suggested that I give "shorebird forecasts" because they are notoriously more enigmatic than songbirds in their migration habits. So part of this migration report will be a "shorebird forecast" in memory of Liz. My sincerest condolences go to Liz's family during this hard time.

Tonight, Illinois is not experiencing uniform migration. As evidenced by the current national composite radar, the southern three quarters (3/4) of Illinois are receiving negligible to very light amounts of migration tonight. The NORTHERN quarter of Illinois is experiencing MODERATE to HEAVY migration levels, and if one looks just further north into Wisconsin, some parts of that state are receiving heavy to extremely heavy amounts of migration tonight. GO BIRDING TOMORROW (TUESDAY) MORNING IF YOU ARE IN NORTHERN ILLINOIS.

Liz Day Shorebird Forecast: As September wears on, shorebirds should be dwindling; however, one should still be on the lookout on mudflats at notorious "shorebird traps" such as Hennepin-Hopper for both Yellowlegs, Sanderling, Least, Pectoral, and Semipalmated Sandpipers, and if one is lucky, Red Knot or Stilt Sandpiper. In more overgrown wetland areas, one should also be on the lookout for Wilson's Snipes which are moving southward in more noticeable numbers now. To predict exactly which species you are likely to find and exactly when, consult Birdcast's new regional migration forecast for the week: http://birdcast.info/forecast/regional-migration-forecast-4-11-september-2015/
and
eBird's Illinois species occurrence map: http://ebird.org/ebird/GuideMe?src=changeDate&getLocations=states&states=US-IL&parentState=US-IL&reportType=location&monthRadio=on&bMonth=01&eMonth=12&bYear=1900&eYear=2014&continue.x=76&continue.y=13&continue=Continue

So in summary, birders in the northern quarter of Illinois should DEFINITELY GO BIRDING tomorrow morning as evidenced by moderate to heavy amounts of arrivals and influxes showing up as radar noise coming into the northern part of the state tonight. Wednesday morning is also looking to possibly have huge numbers of migrant birds because of northwesterly tailwinds forecast for tomorrow (Tuesday) night.

Again, my sincerest condolences go to Liz Day's family; what a loss to the birding community.

Henry (Oak Park, Cook Country)
trumpetswan@comcast.net
ilmigration.blogspot.com
worldbirding.travellerspoint.com
sites.google.com/site/opbirdwalks/

--
Henry Griffin

Henry Griffin

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Re: Autumn 2015 IL Migration Report
« #12 : September 08, 2015, 07:43:03 PM »
For September 9 and 10, 2015:

Hello birding friends,

To view this report in blog format with imbedded images, please visit "Arrivals and Influxes:"
ilmigration.blogspot.com

This is a combined migration report for tonight and tomorrow (Wednesday) night because I will not be reporting then.

Looking at the current national composite radar, the NORTHERN 1/3 of Illinois is experiencing MODERATE to HEAVY MIGRATION tonight spurred on by little precipitation and favorable northerly tailwinds. This is evidenced by the expansive green areas of radar noise in northern Illinois and southern Wisconsin, indicating 300 - 3000 birds per cubic kilometer.
http://tempest.aos.wisc.edu/radar/us3comp.gif

The central 1/3 of Illinois should be experiencing light to moderate migration, depending on how far north the storms reach in Illinois tonight (storms inhibit bird migration).

The southern 1/3 of the state should only see negligible to light amounts of migration tonight because of the storms that will be in the area tonight and into tomorrow.

MIGRATION REPORT FOR THURSDAY, SEPTEMBER 10:

Northerly winds in the northern 1/2 of the state and variable winds in the southern 1/2 of the state should mean moderate to heavy concentrations of migrants for all of Illinois Wednesday night. All areas of the state, especially the northern half, should be worth birding Thursday morning.

Liz Day Shorebird Forecast: Desirable late shorebird-migration species that should start appearing/have already started to appear in mudflat areas should be Red Knot and Stilt Sandpiper. Also, start looking for migrating Wilson's Snipe in more overgrown wetland areas, although it wouldn't be an anomaly to find one on a mudflat, as well.

To predict exactly which species you are likely to find and when, please reference:
Birdcast's regional migration forecast for this week: http://birdcast.info/forecast/regional-migration-forecast-4-11-september-2015/
and
eBird's Illinois species occurrence map: http://ebird.org/ebird/GuideMe?src=changeDate&getLocations=states&states=US-IL&parentState=US-IL&reportType=location&monthRadio=on&bMonth=01&eMonth=12&bYear=1900&eYear=2014&continue.x=76&continue.y=13&continue=Continue

In summary, NORTHERN Illinois birders should GO BIRDING TOMORROW and ALL Illinois birders should go on THURSDAY morning!

Henry (Oak Park, Cook County)
trumpetswan@comcast.net
ilmigration.blogspot.com
worldbirding.travellerspoint.com
sites.google.com/site/opbirdwalks/

--
Henry Griffin

Henry Griffin

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Re: Autumn 2015 IL Migration Report
« #13 : September 10, 2015, 09:55:36 PM »
For September 11, 2015:

Hello birding friends,

Just a quick note tonight because I am extremely tired from a very busy and tough school week. Illinois is experiencing light to moderate migration tight with Northeast portions of the state, especially along the lakefront, receiving densities of migrants more towards the moderate end of the spectrum. View the current national composite radar here: http://tempest.aos.wisc.edu/radar/us3comp.gif

Lake Michigan "migrant traps" would be worth checking tomorrow morning - other than that, the state is overall quieter than the last few nights.

Good birding,

Henry (Oak Park, Cook County)
trumpetswan@comcast.net
ilmigration.blogspot.com
worldbirding.travellerspoint.com
sites.google.com/site/opbirdwalks/

--
Henry Griffin

Henry Griffin

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Re: Autumn 2015 IL Migration Report
« #14 : September 11, 2015, 08:27:02 PM »
For September 12 and 13, 2015:

Hello birding friends,

To view this report in blog format with imbedded images, please visit "Arrivals and Influxes:"
ilmigration.blogspot.com

This is the combined migration report for Saturday, September 12 and Sunday, September 13 because I have an all-day choir retreat tomorrow and therefore won't be able to post.

SATURDAY, SEPTEMBER 12 FORECAST:

MODERATE to HEAVY migration STATE-WIDE is occurring tonight as evidenced by fairly even green radar noise showing up on the national composite radar, which can be found here: http://tempest.aos.wisc.edu/radar/us3comp.gif

Migration may be grounded later tonight in northern Illinois due to rain showers that are forecast to move in very late/very early morning so I would conclude that there is about a 40 PERCENT CHANCE for FALL-OUT CONDITIONS in the northern half of the state, especially in the western region and along Lake Michigan hotspots.

Migration is occurring in moderate to locally heavy densities because the entire state is experiencing northerly tailwinds tonight, spurring birds to migrate in fairly even densities that will hopefully be productive for birding tomorrow morning. View the current wind conditions here: http://earth.nullschool.net/#current/wind/surface/level/orthographic=-89.19,40.03,2455

So wherever you are in the state tomorrow morning, it would be worth getting out.

SUNDAY, SEPTEMBER 13 FORECAST:

The forecast for tomorrow (Saturday) night calls for northerly winds again state-wide but with no precipitation. Birds should also migrate in moderate densities tomorrow night because northerly winds, as tailwinds for the birds, are conducive for migration. Birders statewide should therefore also get out Sunday morning, which is forecast to be about equally as productive as tomorrow (Saturday) morning.

As we near the middle of September, warblers should experience some turnover with species such as Mourning and Connecticut starting to move out of northern Illinois while Black-throated Green Warblers become even more prominent and the first few Yellow-rumped Warblers start to appear.

Liz Day Shorebird Forecast: As September wears on, shorebirds should overall be growing less numerous; however, many species should still be lingering and places like Emiquon or Chautauqua, and it would be worth checking for an uncommon Red Knot that could show up along a Lake Michigan or possibly an inland location sometime.

To find out exactly which avian species you are likely to see, please consult:
BirdCast's regional migration forecast for this week: http://birdcast.info/forecast/regional-migration-forecast-11-18-september-2015/
eBird's species occurrence chart for Illinois: http://ebird.org/ebird/GuideMe?src=changeDate&getLocations=states&states=US-IL&parentState=US-IL&reportType=location&monthRadio=on&bMonth=08&eMonth=11&bYear=1900&eYear=2015&continue.x=63&continue.y=9&continue=Continue

In conclusion, it would be worth birding anywhere in the state both tomorrow (Saturday) and Sunday mornings!

Henry (Oak Park, Cook County)
trumpetswan@comcast.net
ilmigration.blogspot.com
worldbirding.travellerspoint.com
sites.google.com/site/opbirdwalks/

--
Henry Griffin

 

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