-> Could it be The Human Nature of Birds by Theodore Xenophon Barber,
-> Ph.D.? It's a Penquin book, ISBN 01402.34942 (paperback) or ISBN
-> 031203308 (hardback). it was published  in 1993 by St. Martin's
-> Press, and published by Penguin in 1994. Retail price is $10.95.
Thanx Ellen.  I'll pass that on to my friend.  Sounds to me as though it
could be what she is looking for.
--- WILDMAIL!/WC v4.12 
---------------