As always, the “Just for Fun Avian ID Quiz” is brought to you by Jory Langner, our esteemed Avian Quizmaster.

Brrrr.  It’s cold out there.  It’s winter in North America now, no time for long quizzes, no lounging around in the park or on your back porch.  It just cold and time to be quick about everything.  So here’s a mid-winter very short quiz.

But you remember springtime.  Of course you do.  In fact you remember that beautiful morning when you saw a male warbler in regular breeding plumage.  It was not a hybrid.  Due to all the foliage, the only field mark you saw was yellow under-tail coverts.  This narrows the possibilities to about 14 species.

What other common field mark do these 14 or so species have in common?

I suggest a quick look in a field guide.  You’ll be surprised!  I was.  Regular rules apply, ABA birds, codes 1-3 only.  The answer will be posted in a few days.

Have fun!

Written by Jory
Jory's first field guide-identified bird was a Northern Cardinal. This turned out to be his gateway drug into birding. In 2007 Jory became the least accomplished birder to see 300 birds in New York State in one year. He has birded the world over but maintains his birding "beginner mind", of which he is inordinately proud. Just ask him. Jory is the 10,000 Birds Avian Quizmaster, coming up with ever more diabolical ways to stump his legion of devoted fans. He lives with his wife and the possessions of his children just outside of Albany NY.