According to
Photographic Guide to North American Raptors
,
Wheeler & Clark 1995), The range in Length, Wingspan and Weight as follows: (No sex or sub-specific differences are shown).
Length: 27-35 inches (70-90 cm)
Wingspan: 71-89 inches (180-225 cm)
Weight: 4.4-13.6 lbs (2.0-6.2 kg)
Distribution & Habitat
Bald Eagles are now fairly common breeders around
coastlines or large bodies of water in Florida, Chesapeake Bay, Coastal Maine,
Maritime Provinces of Canada, undeveloped areas of the Great Lakes, Yellowstone,
Alberta, Ontario, and the Pacific North-West from Northern California to Alaska.
Bald Eagles can be found throughout North America during Winter
around open water.
History
Bald Eagles historically nested in Alaska and in all of the
lower 48 states. (All states except Hawaii).
In 1963 only 417 nesting pairs were known in the lower 48 states
and in 1967, the Bald Eagle was protected by the Endangered Species Act.
The Bald Eagle was listed as Endangered in areas South of the 40th parallel.
Bald Eagles have never been Endangered or Threatened in Alaska.
Bald Eagles were listed as Threatened in Michigan,
Minnesota, Oregon, Washington, or Wisconsin, but were never listed as Endangered
in those states.
Since 1963, the numbers of nesting Bald Eagles has increased
dramatically and in 1995, the status was changed from Endangered to Threatened
by the U.S. Fish & Wildlife Service (USFWS).
Current Status
In 1999, the USFWS proposed that
the Bald Eagle be removed from the Federal List of Threatened and Endangered
Species. As of Feb 2007, the USFWS is still accepting comments on the proposal.
It was estimated (by USFWS) there were 7,066 nesting pairs of
Bald Eagles in lower 48 states in 2006. This estimate is up from 6,471 nesting
pairs in 2000.
Migration
Southern Bald Eagles in
Florida and the Southern States, can remain near their breeding territories year
round, though some birds move Northward during the Summer after the breeding
season.
The Northern Bald Eagles
and their Southern cousins from the Northern States, migrate South in search of
open water. They can remain in Northern areas where there is open water
and an adequate food supply.
Immature birds begin to
migrate earlier than adults and also travel farther South.
Bald Eagles can be seen at many Raptor Migration sites:
Go to Raptor
Migration Page
Longevity Record: 30 Years and 9 months; based upon known age of a
wild Bald Eagle at banding and subsequent band recovery (Data from Bird Banding
Lab (Klimkiewicz 2008).
References for Bald Eagles:
Bent, A.C. 1937. Life Histories of North American Birds of Prey, Order
Falconiformes. Part 1. Smithsonian Institution United States National Museum
Bulletin 167: 321-333
Klimkiewicz, M. K. 2008. Longevity Records of North American Birds. Version
2008.1. Patuxent Wildlife Research Center. Bird Banding Laboratory. Laurel MD.
Technical Note. Bureau of Land Management - Dept. of Interior. Habitat
Management Series for Endangered Species. Carol Snow. Report No. 5. Southern
Bald Eagle
Haliaeetus leucocephalus leucocephalus and Northern Bald Eagle Haliaeetus leucocephalus
alascanus.
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We will be adding more Bald Eagle Pictures, information and references in the future.