For those who enjoy these types of challenges, here are three, mystery bird videos that range from easy to difficult.?
If you participate, please submit your answers to me PRIVATELY so others can guess. Please watch in High Definition by clicking GEAR WHEEL icon on bottom right(select 1080p)

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A) A nice backdrop for these corky birds: (MODERATE)
http://www.youtube.com/watch?v=geNrDEYub4w


B) How fast can you ID the species and sex of the bird? Upclose, it's stunning! (EASY)
http://www.youtube.com/watch?v=7Til_8-zmlY


C) High in the sky and sometimes this is all you get in the field! (DIFFICULT)
http://www.youtube.com/watch?v=--K7WKTUUfk


Have fun and I will reveal answers in a few days.?

Khanh Tran (ktbirding.com) ?