The center toe (excluding talon) can selection 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 advanced to be the largest in accipitrids) measuring from 24.1 to 33.6 mm (.95 to 1.32 in) in size. In the regular scientific method of measuring wing size, the wing chord is 325.1-444.5 mm (12.80-17.50 in) long.