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 pale feather edges of the outer flight feathers (except the first one) are slightly enlarged at the base and proximal end of the feathers, and they are slightly crossed into two transverse spots, especially when flying. The mouth is short, thick and strong, conical, with a slightly curved peak. Except for the tree sparrow, both sexes are different colors.
2. Eagle
The eagle is fierce, with a yellow mouth, a curved upper mouth, strong feet, sharp claws on its toes, and big wings that are 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. Birds of this order have broad heads, short and thick mouths with hooked front ends, and the feathers on the front of the heads are arranged in a face plate, and some species have ear-shaped feathers. The distribution of eyes, face plate and ear feathers make the head of this bird very similar to that of a cat, so it is commonly called an owl.
4. Dragonflies
Generally, it is large in size, with long and narrow wings, and its membranous and reticulate veins are extremely clear. Vision is extremely sensitive, with 3 eyes; Antennas 1 pair, thin and short; Chewing mouthparts. The abdomen is slender, flat or cylindrical, with anal appendages at the end. The feet are thin and weak, and there are hooks and thorns on them, 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 their calls. Goose is a bird class, duck family, which is the general name of all kinds of geese subfamily. The common geese in China are Hongyan, Grey Goose, Bean Goose and White Goose. The geese team consists of 6 or multiples of 6, and the geese group is the aggregation of some families or some groups.