What visually defines the crested penguins of the Eudyptes genus?

Answer

Elaborate, ornamental plumes of yellow or orange feathers sprouting from above their eyes.

The defining characteristic that grants them their common name is the elaborate, ornamental plumes of yellow or orange feathers situated above their eyes.

What visually defines the crested penguins of the Eudyptes genus?
birdanimalgenuspenguinEudyptes