Red Winged Black Bird
Posted 10 July 2012 - 03:18 PM
[url=http://www.flickr.com/photos/harley_riders/7543425332/][img]http://farm9.staticflickr.com/8006/7543425332_605ce5c40d.jpg[/img[/url] [url=http://www.flickr.com/photos/harley_riders/7543425332/]DSC_0054[/url] by [url=http://www.flickr.com/people/harley_riders/]rxbooch[/url], on Flickr
Posted 10 July 2012 - 03:24 PM
Posted 10 July 2012 - 03:32 PM
Posted 10 July 2012 - 03:34 PM
Its a Red-Winged Blackbird. You see quite a bit of variation in the color of their epaulets (shoulder patches), but Tri's will be pure white. The bill on this one also looks fine for a RWBGa would also be way out of range for them, so its always a safe bet everyone you encounter there is a RWB.
Thanks! I don't encounter very many, but had not seen one with white yet.
Posted 10 July 2012 - 03:49 PM
Here's a RWB question, does diet effect their coloring?
Yes and no. There's been a lot of research on the topic, and its clear that diet does play some role in most or all carotenoid-based pigmentation (reds and oranges), but there are evolutionary and biological constraints that effect coloration quite a bit. For a lot of species, age and plumage seem to have a much greater effect on coloration than diet, but its pretty difficult to disentangle.
Here's a pretty good article on the subject if you are interested: http://www.ebd.csic.es/jordi/Tella.pdf
Posted 10 July 2012 - 04:08 PM
Posted 10 July 2012 - 05:36 PM
Posted 10 July 2012 - 06:46 PM
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