This report, jointly produced by American Bird Conservancy and National Wildlife Federation gives an in-depth analysis of how global climate change may affect populations of some bird species.  In addition to the main report, there is a supplement for each of the lower 48 U.S. States.

Download a state supplement by clicking on a State

Download the report by section (smaller files means faster download).

Foreword
Introduction
The Problem of Global Warming
Global Warming and Birds
Why Should We Care
The Solution: Reduce Greenhouse Gas Emissions
References

The report and state supplement are in Adobe Acrobat format and require Acrobat Reader software, which can be downloaded for free from Adobe's website