What feature identifies a rockhopper penguin, distinguishing it visually?
Answer
Bristly, bright yellow-orange supraorbital crests
The defining visual characteristic of the rockhopper penguin is its distinctive head ornamentation. Specifically, these birds possess bristly crests composed of feathers that are bright yellow-orange in color, which jut out conspicuously over their eyes, forming the supraorbital crests that aid in their immediate identification among seabirds in the Southern Hemisphere.
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