Assertion: osprey's claw | /r/CapableOf | curve about one third of a circle
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Source sentences:
text: However, Osprey differ from eagles, hawks, kites, and falcons in certain parts internally and “its long, strong claws, curved about one third of a circle, and completely round (not concave and grooved beneath), in equal length of its toes (not unequal as in other raptors) and in the heavy, peculiar scaled (reticulated) tarsus (shank) and short, dense feathering of the thighs