The US Department of Agriculture Animal and Plant Health Inspection Service (USDA APHIS).
US Fish and Wildlife (FWS) regulates native species. People are not allowed to "own" native species. You are given permission by the government to acquire or steward them for various reasons such as education, display, falconry or research. Many birds in the US are protected by the Migratory Bird Act. Any birds on this list require a permit from the federal government to be in your care.
Keep in mind there may be other state and city regulations, policies, ordinances and laws that apply to animals in your area. It is a good idea to check on the local level and state level as well as the federal level to make sure you are in compliance.
Here is a list of some of the most often requested regulatory and guidance documents from USDA APHIS:
Law: The Animal Welfare Act
Regulations: 9 Code of Federal Regulations Animal Welfare
Policy Manual: Animal Care Policy Manual
Dealer Inspection Guide
Exhibitor Inspection Guide
Research Facility Inspection Guide
Inspection Requirements Handbook and Attachments
Information and Fact Sheets:
Fact sheet on the Animal Welfare Act
Licensing and Registration Under the Animal Welfare Act
Types of Animal Welfare Act Licensees and Registrants
Glossary of Animal Welfare Act terms
Regulation of Commercial Animal Dealers
Regulation of Exhibitors
Regulation of Research Facilities
Information on the AWA inspection process
Fact sheet on Compliance Inspections
Information on the AWA enforcement process
Animal Care Inspection Information Search Tool: searchable database of inspection reports
It is a lot too read, but I hope you find these links useful.
Copyright Good Bird Inc 2012