The center toe (excluding talon) can array 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 biggest in accipitrids) measuring from 24.1 to 33.6 mm (.95 to 1.32 in) in size. In the conventional scientific strategy of measuring wing dimensions, the wing chord is 325.1-444.5 mm (12.80-17.50 in) extensive.