Pallas's Warbler (Phylloscopus proregulus) adult, breeding plumage, perched on twig, Hong Kong, China, January

- Image ID: DGG6AK

Pallas's Warbler (Phylloscopus proregulus) adult, breeding plumage, perched on twig, Hong Kong, China, January

FLPA / Alamy Stock Photo

Image ID: DGG6AK