The middle toe (excluding talon) can range from 38.3 to 53.8 mm (1.51 to 2.12 in), with the hallux-claw (the talon of the rear toe, which has progressed to be the most significant in accipitrids) measuring from 24.1 to 33.6 mm (.95 to 1.32 in) in duration. In the standard scientific process of measuring wing measurement, the wing chord is 325.1-444.5 mm (12.80-17.50 in) very long.