Audubon Guide to North American Birds
Perhaps 800 species of birds may be seen in the U.S., a federal republic composed of 50 states, a federal district, five major territories and various possessions. The 48 contiguous states and Washington, D.C., are in central North America between Canada and Mexico. The state of Alaska is in the northwestern part of North America and the state of Hawaii is an archipelago in the mid-Pacific. 
List of Birds of the United States
Which state do you think has the most number of breeding birds?
The Bald Eagle was chosen June 20, 1782 as the emblem of the United States of America, because of its long life, great strength and majestic looks, and also because it was then believed to exist only on this continent. On the backs of our gold coins, the silver dollar, the half dollar and the quarter, we see an eagle with outspread wings. On the Great Seal of the United States and in many places which are exponents of our nation’s authority we see the same emblem. The eagle represents freedom. Living as he does on the tops of lofty mountains, amid the solitary grandeur of Nature, he has unlimited freedom, whether with strong pinions he sweeps into the valleys below, or upward into the boundless spaces beyond.
Alabama
Alaska
Arkansas
Arizona
California
Colorado
Connecticut
Delaware
District of Columbia
Florida
Georgia
HawaiiIdaho
Illinois
Indiana
Iowa
Kansas
Kentucky
Lousiana
MaineMaryland
Massachusetts
Michigan
Minnesota
Mississippi
Missouri
Montana
Nebraska
Nevada
New Hampshire
New Jersey
New MexicoNew York StateNorth Carolina
North Dakota
Ohio
Ohio
Oregon Pennsylvania
Rhode IslandSouth Carolina
South Dakota
Tennessee
Texas
Utah
Vermont
Virginia
Washington StateWest Virginia
Wisconsin