The middle toe (excluding talon) can variety 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 developed to be the greatest in accipitrids) measuring from 24.1 to 33.6 mm (.95 to 1.32 in) in duration. In the typical scientific approach of measuring wing dimensions, the wing chord is 325.1-444.5 mm (12.80-17.50 in) very long.