How is the arc of yellow feathers extending from the Hoiho's eye sometimes described?

Answer

A "tiara" or "halo" effect

The yellow feather band that encircles the pale yellow eye of the Hoiho and sweeps back across the rear of the head is a highly distinctive feature. Its graceful curvature, extending in an arc towards the nape of the neck, leads observers to employ figurative language when describing its appearance. This unique arrangement of feathers encircling the eye is often poetically referred to as resembling a 'tiara' or a 'halo,' emphasizing its unique crown-like visual impact among penguins.

How is the arc of yellow feathers extending from the Hoiho's eye sometimes described?
birdanimaleyecharacteristicpenguin