These 5 books address bird migration, where they can be found, and how their populations have declined.

Living on the Wind - Across the Hemisphere With Migratory Birds by Scott Weidensaul (1999) Paperback, very good condition. "It's science that reads like adventure."

Bird Migration - An Illustrated Account by Robert Burton (1992) Hardback, very good condition. This book addresses the amazing and thought provoking natural phenomena of bird migration. It is illustrated gorgeous color phots and contains many explanatory drawings.

Where the Birds Are -- A Guide to All 50 States and Canada by John Oliver Jones (1990) Paperback, Good condition. This guide provides directions to birding sites in all 50 states as well as identifying local resources such as birding groups and federal and state agencies.

Birds in Jeopardy -- The Imperiled and Extinct Birds of the United States and Canada Including Hawaii and Puerto Rico by Paul Ehrlich, David Dobkin, and Darryl Wheye (1992) Paperback, good condition. Illustrated with color drawings. Chapters include Birds That Are Officially Threatened or Endangered, Birds That Are Not Officially Listed in the US, Birds That Have Become Extinct Since 1776, and Commentaries on Imperilment.

Atlas of Wintering North American Birds -- An Analysis of Christmas Bird Count Data by Terry Root (1988) Hardback, fair condition. A statistical analysis of 10 years of CBCs.