All is not lost
FNG (and others)!
Go to
http://www.abe.com
Click on "detailed search" on the left and then enter "bird flight" in the keywords section.
I've only looked at the first page of listings returned, but it looks like there
are books on bird flight out there. And because the site lists books offered by booksellers from around the world, you may be able to order one from a seller close to home.
And if someone orders one of these books, please tell us if you find the answer to
Stallie's question (and some of the others posted here)!