What are the appearance and other characteristics of an expert at singing birds, catching insects, catching mice and building nests?

The best singing bird is: the lark

The best insect catching bird is: the woodpecker

The best mouse catching bird is: the owl

The best nesting birds are: swallows

The appearance of the lark: small beak, slightly pointed and long wings.

The appearance of the woodpecker: the feathers are particularly beautiful.

Appearance of an owl: open one eye and close one eye.

Appearance of a swallow: tail like scissors.

1. Lark: Lark is the general name of the genus Lark in the order Passeriformes of the order Birds. . It is a representative bird of the grassland. It is a small songbird that often sings while flying. Because it flies so high, people often only hear its sound and never see it. Larks live in arid mountains, deserts, grasslands or rocks. They often live in groups during the non-breeding season. They often fly or run short distances to feed on insects and grass seeds. Because of its clear and crisp cry, "little lark" has also become synonymous with a sweet and pleasant voice. The colors are rich and colorful, including red, blue and so on.

2. Woodpecker: Picidae (scientific name: Picidae): It is a family of the order Birds, with about 221 species. Body length 90~560 mm. Birds in this family also have large heads, but long necks, strong and straight beaks, chisel-shaped mouths, long and retractable tongues with short hooks at the tips; slightly shorter legs with 3 or 4 toes; and flat or wedge-shaped tails. The feather shaft is hard and elastic, supporting the body when pecking wood. ***There are about 34 genera and 221 species. Can be seen except in Oceania and Antarctica. Woodpeckers can dig holes in trees for hookworms. Its bill is long, sharp and hard, and can be inserted into the hard wood. Its tongue is long and thin, with many barbs. The surface is covered with a layer of mucus, which can accurately and accurately drill holes in trees. Hook out the pests. It mainly eats pests such as longhorn beetles, hyaline moths, and gidding insects that are hidden inside tree trunks. Known as the "forest doctor".

3. Owl: Owl (xiāo) (scientific name: Strigiformes) is an order under the class Birds and is a nocturnal raptor. The beak is strong and hooked, and the wax film on the base of the mouth is covered by stiff whiskers. The wings have different shapes and the fifth secondary feather is missing. The tail is short and round, with 12 tail feathers, sometimes only 10. The feet are strong and powerful, often fully feathered, and the fourth toe can be turned backward to facilitate climbing. The claws are large and sharp. Nestlings are late maturers. The tail fat gland is exposed. No secondary feathers, occasionally retained. There are ear feathers around the ear holes, which help distinguish sounds and position at night. Nest in tree holes or rock crevices. The birds in the order Owlidae are called owls, and there are more than 130 species in total. Found on all continents except Antarctica. Most species are nocturnal carnivores. Birds of this order have broad heads, short and thick beaks with a hook-shaped front end, and the feathers on the front of the head are arranged into a facial disk. Some species have ear-shaped feathers. The distribution of the eyes, facial disk and ear feathers make the head of this bird very similar to that of a cat, so it is commonly known as an owl. Also known as the God Cat Eagle.

4. Swallow (Swallow), whose scientific name is Barn Swallow, is a collective name for 74 species of birds in the order Passerine order Swallowidae. It is small in shape, with narrow wing tips, a concave tail and short beak, weak and small feet, and not too many feathers. The plumage is solid or metallic blue or green; both sexes are similar in most species. Swallows spend a lot of time catching pests in the air and are one of the most flexible passerines. They mainly feed on insects such as mosquitoes and flies and are well-known as beneficial birds. They build nests in tree holes or crevices, or drill holes on the beach, or stick mud to walls or protrusions of corridors, roofs, eaves, etc. in urban and rural areas to make nests. Each lays 3 to 7 eggs.