Cliff Swallows Build Nests From Mud
Cliff Swallows build their mud nests on cliff faces and other vertical surfaces in colonies containing hundreds, even thousands of other birds. They also build nests in the eaves of buildings. The pair works together, gathering pellets of wet mud in their beaks and laying them down one by one in rows until the structure … Continue reading Cliff Swallows Build Nests From Mud
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