Sparrows are very similar in size and color. Generally, the upper body is brown and black, so it is commonly known as sparrow. There are 9 primary flight feathers, and the light feather edge of the outer flight feather (except the first one) is slightly enlarged at the base and proximal end of the feather and slightly crosses into two transverse spots, which is especially obvious in flight. The mouth is short, thick and strong, conical, and the top is slightly curved. Except tree finches, both sexes are different colors.

2. eagle

The eagle is fierce by nature, with a yellow mouth, a curved mouth, strong feet, sharp claws on its toes, big wings and good at flying. It has sharp eyes and can see thousands of meters or more.

3. Owl

Most of them are nocturnal carnivores, and their food is mainly rodents, but also insects, birds, lizards, fish and other animals. The bird of this order has a wide head, a short and thick mouth, a hook-shaped front end, a face-disk-shaped arrangement of feathers at the front of the head, and some kinds of feathers are ear-shaped. The distribution of feathers in eyes, panels and ears makes the head of this bird very similar to that of a cat, so it is commonly known as an owl.

4.dragonfly

Generally, the body is large, the wings are long and narrow, and the membrane veins and reticular veins are extremely clear. Vision is extremely sensitive, with 3 eyes; Antenna 1 pair, thin and short; Chewing mouthparts. The abdomen is slender, flat or cylindrical, with anal appendages at the end. Feet are thin and weak with hooks and thorns, which can catch pests when flying in the air.

5.goose

Wild geese are full of enthusiasm, can inspire their companions, and encourage their flying companions with calls. Goose is a class of birds, Anatidae, which is the general name of various goose subfamilies. The common geese in China are Hongyan, Grey Goose, Bean Goose and White Goose. The geese are composed of 6 or multiples of 6, and the geese are the aggregation of certain families or certain groups.