New Photo Quiz: November/December 2013 Birding

Photo Quiz time!

Here are the New Photo Quiz images in the November/December 2013 issue of Birding magazine.

Birds are marvelously complex, and no bird species ought to be reduced to a single field mark. Which is a clue to this photo quiz…

Each of our quiz birds is posed in such a way that you cannot see a key field mark, perhaps the key field mark. Please tell us (1) what key field mark is obscured or invisible, and (2) how you identified the bird anyhow.

Here goes:

Quiz Bird A

Quiz Bird B

Quiz Bird C