www.flickr.com
items in Illinois Birder's Forum Photos More in Illinois Birder's Forum Photos pool

: Breeding codes in situations involving brood parasitism  ( 1949 )

Geoffrey A. Williamson

  • Hero Member
  • *****
  • : 317
    • G. Williamson's web site
Breeding codes in situations involving brood parasitism
« : July 05, 2014, 08:06:28 AM »
Yesterday I watched an adult male Common Yellowthroat feeding a juvenile Brown-headed Cowbird.  I did not see any young yellowthroats.  How do I note breeding codes in eBird?

Here are some options that I see.  In each case a comment that it was an ad. male Common Yellowthroat feeding a young Brown-headed Cowbird could be made.

(1) note breeding code FY Confirmed--Feeding Young for just Common Yellowthroat

(2) note breeding code FY Confirmed--Feeding Young for just Brown-headed Cowbird

(3) note breeding code FY Confirmed--Feeding Young for just Common Yellowthroat and Brown-headed Cowbird

Which is most preferential?
Geoff Williamson
Chicago (Cook County), Illinois

Amar Ayyash

  • Hero Member
  • *****
  • : 1621
    • Anything Larus
Re: Breeding codes in situations involving brood parasitism
« #1 : July 05, 2014, 09:04:09 AM »
Interesting question, Geoff. I look forward to hearing what Cvetas has to say.

On a related note, does this mean the Brown-headed Cowbird pair that parasitized the nest was successful at nesting?  ;D
Time you enjoy wasting is not wasted time.  -B. Russell
http://anythinglarus.com

RLShonkwiler

  • Hero Member
  • *****
  • : 854
Re: Breeding codes in situations involving brood parasitism
« #2 : July 05, 2014, 07:16:42 PM »
I usually opt for number 2 with a note as to what the "foster" parent is but I don't know if that's what is preferred by BCN or Cornell/Ebird.

Randy

brewbird1

Re: Breeding codes in situations involving brood parasitism
« #3 : July 08, 2014, 07:25:25 AM »

On a related note, does this mean the Brown-headed Cowbird pair that parasitized the nest was successful at nesting?  ;D

Amar-

I doubt the female knows which male is the father.

Evan Carlson

  • Hero Member
  • *****
  • : 249
    • 2015 Peoria Big Year
Re: Breeding codes in situations involving brood parasitism
« #4 : July 08, 2014, 03:19:50 PM »
This is a little off-topic, but I don't want to make a new thread for my question.

I witnessed a Blue Jay eating the young from a White-eyed Vireo nest today. Is "NY Confirmed--Nest with Young -- Nest with young seen or heard." still appropriate even though, as far as I know, there were no young anymore when I moved on?

Elliot Schunke

  • Hero Member
  • *****
  • : 425
Re: Breeding codes in situations involving brood parasitism
« #5 : July 09, 2014, 02:19:07 PM »
Unsure of eBird's stance but during the current Florida BBA, both species would be confirmed as breeding by this situation.

codes used would be:

confirmed, carrying food for the COYE
confirmed, recently fledged young BHCO
-------------
Elliot Schunke
currently in Tallahassee, FL
home is Milford, Iroquois Co.

 

Join the ABA



ABA Bird of the Year

Help the Illinois Birders' Forum remain one of the best birding forums on the net. A small donation of any amount goes a long way.





Fatbirder's Top 1000 Birding Websites

Hunting Optics from Eagle Optics affiliate_link