Unrelated birds that nest in holes in trees produce eggs with white shells, as opposed to eggs with speckled or colored shells. This is an example of

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Quizplus · Accepted Answer

This is an example of convergent evolution, where unrelated species develop similar traits independently of each other due to adapting to similar environments or ecological niches, in this case, nesting in holes in trees.

Unrelated Birds That Nest in Holes in Trees Produce Eggs