I'll give a hearty second to the Pete Dunne and Kenn Kaufmann books already listed, and to "Wild America" and the Fiennes book, and would like to add a few more titles.
A personal favorite is "Red Tails in Love" by Marie Wynn, the tale of hawks nesting on skyscrapers in New York City, and the Central Park birding club.
"The Birds of Heaven" by Peter Matthiesen, his story of searching out and finding all the species of crane on the planet. The hardback edition is illustrated by the wonderful artist Robert Bateman.
An older series that is at least peripherally about birds, but mostly the natural history of the US in general is the series by Edwin Way Teale: North with the Spring, Wandering Through Winter, Into the Summer, and Autumn Across America. These books were written in the 50s and probably now completely out of print. He and his wife traveled throughout the country, following the seasons. Teale won a Pulitzer Prize for the series. His autobiography, "Dune Boy" is definitely out of print, even the reprint edition, but is a wonderful evocation of the Indiana Dunes at the turn of the 20th century -- and landscape that now exists only in very small, scattered parcels along Indiana's Lake Michigan lakefront.
Aren't we fortunate to have a hobby/love/passion that has so much wonderful writing about it?
