Crows are notorious nest robbers, stealing eggs from the nests of passerine birds, and they will even eat other birds if they can catch them

Adult passerines attack crows that approach their nests, darting at them and pursuing them when they fly away. What anatomical difference in the wings of passerines and crows might allow passerines to engage in such seemingly risky behavior?


Many passerines, though not all species, move through dense vegetation, turning and twisting as they fly. They have elliptical wings, whereas the wings of crows have a shape closer to the wings of soaring birds. As a result, passerines are more maneuverable than crows and can dart in and out with little risk.

Anatomy & Physiology

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A) cortisol B) thymosin C) glucagon D) melatonin

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Which of the following statements about the cauda equina is true?

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Diapedesis is the means by which a leukocyte reproduces

Indicate whether the statement is true or false

Anatomy & Physiology