Nazca Booby (4)
Jan 21 2009
Nazca boobies preening each other. They are very attentive to one another, but rather inattentive parents. They lay two eggs, but only one chick ever survives. The larger chick always pecks the younger chick to death. Perhaps they lay two eggs as insurance in case the first egg doesn't hatch.
Jun 24 2014

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