Emperor Penguins live in the live cold Antarctica, where nesting materials are scarce.
Chuck-Wills-Widow is a bird that lays its eggs directly on leaves, pine needles or even the dirt.
Cowbirds are brood parasites that steal other birds' nests
Common murres lay their eggs on cliff sides as they spend most of their time in the open ocean.
White Tern lives on tropical areas and lay eggs on nooks and crevices of large branches.
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