“The National Audubon Society has completed a continental analysis of how North America’s birds may respond to future climate change – Audubon’s Birds and Climate Change Report – Using extensive citizen science data and detailed climate layers, we developed models that characterize the relationship between the distribution of each species and climate. Then, we used our models to forecast species distributions to future time periods based on climate estimates described by the Intergovernmental Panel on Climate Change (IPCC). This core set of analyses will serve as the backbone for informing bird conservation in North America through planning tools for land managers, reports focused on species of conservation concern, and peer-reviewed publications addressing the impacts of climate change on birds. We addressed three topics of general interest for broad-scale bird conservation, which we summarize here and on Audubon’s website: (1) the impact of climate change on bird diversity in the United States and Canada (Part I); (2) identification of areas that are expected to remain important to birds under the present and future climate (Part II); and (3) in-depth analyses of potential climate change impacts on 314 species (online at audubon.org/climate). This document is a guide to Audubon’s climate science analysis. In the following pages, you will find descriptions of the work, along with definitions of key terms, practical guides to using the data and maps, and examples of how Audubon’s climate science can enrich your ongoing programs.”