What kind of bird is this?

Judging from the photo, this is a young night heron.

Night heron (scientific name: Nycticorax nycticorax) is a medium-sized wading bird with a body length of 46-60 cm. The body is thick and fat with a short neck; The mouth is thin, slightly bent downward, black; The exposed part of tibia is less, and the feet and toes are yellow; Dark green and metallic luster from top to bottom; The rest of the upper body is gray; White lower body; The pillow is covered with 2-3 long white feathers hanging down to the back, which is very eye-catching.

Habitat and activities in streams, ponds, rivers, swamps and rice fields in the plains and hilly areas. Nocturnal wedding groups mainly feed on animal foods such as fish, frogs, shrimps and aquatic insects. It is distributed in continental Europe, Africa, Madagascar, eastern Asia Minor, India, Indonesia, Central Asia and South Asia, all the way to Russia's Far East Primorsky Territory, South Korea and Japan.

Bird:

Adult bird: