Living pretty close to several Pennsylvania Hawk Watches I do a bit now and then when work and other other household duties allow.
I was wondering if anyone has any input on these books which amazon.com seem to think I should have in my collection.
Hawks at a Distance: Identification of Migrant Raptors
Hawks from Every Angle: How to Identify Raptors In Flight
A Photographic Guide to North American Raptors
I was given a copy of the Eastern Bird Crossley Guide for Christmas and I like it a lot.