What is the primary striking feature used for instant recognition of the White-crowned Sparrow?

Answer

Dashing pattern of black and white stripes on the head

The species is immediately recognized by the distinctive black and white stripes adorning the head, which contrast sharply with a plain gray breast.

What is the primary striking feature used for instant recognition of the White-crowned Sparrow?
birdappearancefemaleWhite-Crowned Sparrowmale