Yellow-rumped Warbler variability
22 Apr 2018, 5:15 PM,
#1
Yellow-rumped Warbler variability
Since most of the Juncos have left my yard, I needed to find something else to obsess about. I've seen a few Yellow-rumped Warblers at Walnut Canyon Lakes in the last ten days that show some interesting plumage patterns. One is a very obvious intergrade between Myrtle and Audubon's:        


One looked mostly like an Audubon's, but had a bit of a white eyeline and white spot in front of the eye:
       

And finally, a mostly Myrtle looking bird without an eyeline, and seems to have a white spot on one side but not on the other:
       

Are the second birds within the normal range of variation for their subspecies, or do those features indicate intergradation? Sibley mentions that the tail pattern is useful in separating the two, but I can't quite square his paintings with some photos I've looked at. I didn't get very good tail shots, but if anyone has any insight on that I'd appreciate it. Thanks! Tom
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7 May 2018, 6:14 PM,
#2
RE: Yellow-rumped Warbler variability
Fantastic Photos Tom,
Amazing plumage variation!
Kathryn
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