Quiz 21: Wing patterns

With thanks to the online wing collection of the Slater Museum of Natural History, University of Puget Sound for allowing the use of their wing photos.

With thanks, again, to Brian E. Small for providing the beautiful photos. You can see lots more at his website, and clicking any of his photos links there as well.

White wing patches 1



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Question 1The species is:Baltimore OrioleAltamira OrioleSpot-breasted OrioleBullock's OrioleQuestion 2The big solid white patch on the wing is on the:Primary covertsScapularsSecondariesSecondary covertsQuestion 2 Explanation:
The white patch includes all of the median coverts and most of each greater secondary covert. When the wing is folded the broad white edges on each greater covert conceal the black parts of those feathers, although you can still see the ghost of the black parts showing through. Similarly, narrower white edges on the secondaries and tertials merge when the wing is folded to form a white streak back towards the tail.
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