INCHES.
Pygmy size Length up to 5.00
Warbler size 5.00-6.00
Sparrow size 6.00-7.50
Chewink size 7.50-9.00
Robin size 9.00-12.00
Little Hawk size, Teal size, Tern size 12.00-16.00
Crow size 16.00-22.00
Gull size, Brant size 22.00-30.00
Eagle size, Goose size 30.00-42.00
Giant size 42.00 and upward
Measurements are given in inches and hundredths and in millimeters, the
latter enclosed in parentheses.