How do the crests of the Macaroni penguin typically differ from those of the Royal penguin?

Answer

Macaroni crests often meet at the forehead, unlike the often more separated Royal crests.

The Macaroni penguin is famous for its dense, bright orange-yellow crests that meet at the forehead, whereas the Royal penguin's crests are often slightly paler or more separated.

How do the crests of the Macaroni penguin typically differ from those of the Royal penguin?
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