Does anyone know what kind of bird this is? This kind of bird is abundant in Shaoxing, Zhejiang.

The northern red-tailed robin (common name: grey-crowned robin, red-tailed robin and red-tailed robin) belongs to the genus Red-tailed robin, with dark brown eyes, head side, throat, upper back and wings, white spots on wings, dark gray head and pillow, and black rest of the body. The females are grayish brown except for brown tail feathers and white wing spots. Insect lovers are all pests, except for a few beneficial insects. Habitat in mountain forests and scrub areas, often standing on prominent branches, tail trembling up and down. Especially in residential areas and nearby jungles, gardens and groves, it is more common. Sometimes it extends into large forests along roads and valleys, but it also moves on the edge of roadside forests and rarely enters dense virgin forests.

They all eat insects, but occasionally eat some bush berries, such as blue berries. Among them, chicks and young birds mainly feed on moths, locusts and insect larvae, and adults mostly feed on adults and larvae of insects such as Coleoptera, Lepidoptera, Orthoptera, Hemiptera, Diptera and Hymenoptera, with more than 50 species, of which about 80% are pests on crops and trees. Common food types include Mothidae, Chrysomyidae, stinkbug, Acridoidea, Muscidae, Cricket, Tabanidae, Coccinellidae, Cerambycidae, Locusta, Noctuidae, Silkworm, Percidae, Carpidae, Tenebridae, Formicidae, Aphidae, walking insects and leafhoppers.