Linear measurements (mean and range in mm) of adult Bald Eagles from southern (Georgia, Florida, Louisiana, Baja California) and northern (Alaska, Northwest Territories, Maine, Massachusetts, New York, Pennsylvania, Virginia, Arkansas, Iowa, and North Carolina) populations from Friedmann 1950; Alaska data from Imler and Kalmbach 1955.

Southern populationsNorthern populationsAlaska
Wing-chord
Male529.2 (515–545, 16)588.6 (570–612, 29)585.7 (555–612, 35)
Female576.5 (548–588, 11)(1)640.2 (605–685, 16)625.1 (590–655, 37)
Tail
Male248.5 (232–264, 16)309.7 (290–322, 29)289.8 (274–302, 35)
Female271.2 (247–286, 11)(1)339.4 (300–365, 16)304.0 (282–325, 37)
Culmen
Male49.8 (49–52, 16)52.5 (49–57, 29)65.3 (62–68, 35)
Female32.7 (30–35, 11)(1)54.1 (47–58, 16)71.4 (68–75, 37)
Tarsus
Male96.0 (95–97, 16)99.8 (84.5–106, 29)
Female103.0 (101–107, 11)(1)101.9 (83–110, 16)
Toe
Male61.5 (60–63, 16)70.4 (67–74, 29)
Female71.8 (66–77, 11)(1)74.5 (70–82, 16)