Sakers exhibit great variation in color and pattern, ranging from a fairly uniform chocolate brown color to a cream or straw base with brown bars or streaks to brown-eyed leucistic individuals, which are especially prized by Arab falconers. In general, sakers have white or pale spots on the inner webs of their tail feathers, rather than the bars of color that are common among other desert falcons. As the underwing is usually pale, it has a translucent appearance when contrasted against the dark axillaries and primary tips.
Saker females are markedly larger than males; females typically weigh 970 to 1300 g (average 1135 g), have an average length of 55 cm, and a wingspan of 120 to 130 cm. Males usually weigh from 730 to 990 grams (average 840 g), are about 45 cm long on average, and have a wingspan of 100 to 110 cm.
As with other falcons, sakers have sharp, curved talons, used primarily for grasping prey. Sakers use their powerful, hooked beak to sever the prey’s vertebral column.
Range mass: 730 to 1300 g.
Average length: 45 cm for males, 55 cm for females cm.
Range wingspan: 100 to 130 cm.
Average wingspan: 105 cm for males, 125 cm for females cm.
Sexual Dimorphism: female larger
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