State of the World's Birds - case studies

Introduction: The importance of birds to biodiversity
State: What we know about the changing state of birds
Pressure: Why birds are declining
Response: What can be done to improve the status of birds

Key publications


  • Chipley ,R. M., Fenwick, G. H., Parr, M. J. and Pashley, D. N. (2003). The American bird conservancy guide to the 500 most important bird areas in the United States: key sites for birds and birding in all 50 states. New York: Random House Trade.

USA at a glance

Land area

9,826,675 km2

BirdLife Partner

Audubon / American Bird Conservancy


Total number of birds 824
Globally threatened birds 88
Country endemics 71

Important Bird & Biodiversity Areas

Number of IBAs 645
Total IBA area 1,181,263 km2
IBA area as % of land area 12%

Endemic Bird Areas

Number of EBAs 10

Recommended Citation
BirdLife International (2023) Country profile: USA. Downloaded from on 30/09/2023.