1, swallow
Swallow, the scientific name of domestic swallow, is the general name of 74 species of birds of passeriformes. Small size, narrow wing tip, short beak and concave tail, weak feet and few feathers. Feathers are monochromatic, blue or green, with metallic luster; Most kinds of men and women are very similar.
Swallows spend a lot of time catching pests in the air. It is one of the most flexible birds, mainly feeding on insects such as mosquitoes and flies, and is a well-known beneficial bird.
Nest in tree holes or cracks, or make holes in sand dikes, or stick mud on walls or protrusions of corridors, roofs, eaves, etc. In urban and rural areas. 3 pounds per work? Seven eggs.
2. azaleas
Rhododendron * * has 10 species of birds, which vary greatly in size, generally between 24-37 cm. They all have long tails, strong legs and claws. The most common species in China are Rhododendron fourleaf and Rhododendron grandiflora.
Often living in seclusion in the Woods, it is not easy to see at ordinary times. Crying is particularly loud, every 2-3 seconds, sometimes all night. Omnivorous, pecking at caterpillars, scarabs and other insects, and eating plant seeds. Instead of nesting, they lay eggs in the nests of reed warblers and black curly tails, and the eggs are similar in shape to the host eggs.
3. Owl
Birds in the order Ostrich are called owls, and the total number exceeds 130 species. It is distributed on all continents except Antarctica. Most species are nocturnal carnivores. Their food is mainly rodents, but there are 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. Alias cat eagle.
4. flies
In biology, flies are completely metamorphosed insects, and their life history can be divided into eggs, larvae (3rd instar), pre-pupae, pupae and adults. Although the life span of flies is only about 1 month, a female fly can lay 500- 1000 eggs. According to the statistics in the late 1970s, there are about 4,200 species of flies in the world, and about 500 species are known in China.
Although the life span of flies is only about 1 month, its reproductive ability is amazing. According to statistics, a female fly can lay 500- 1000 eggs, and the number of offspring of a pair of flies is as high as1900,000, which shows the great harm of flies.
Flies can spread 50 kinds of diseases, such as avian influenza, Newcastle disease, foot-and-mouth disease, swine fever, Pasteurella multocida, colibacillosis, coccidiosis and so on.
When a disease breaks out, it can accelerate the spread of an epidemic. A large number of flies in the barn will cause birds to be restless and pollute eggshells. The activity of maggots in feces can lead to the increase of ammonia content in poultry houses;
Affecting the production performance of chickens can lead to mental anxiety of livestock, mutual friction and biting of animal bodies, resulting in appearance damage, reducing mental anxiety and excessive exercise of meat-grade livestock and poultry, reducing the ratio of meat to feed, increasing feeding costs and reducing benefits. In addition, flies can spread a variety of human infectious diseases, thus threatening the health of employees.
5, mosquitoes
Mosquitoes, belonging to Insecta Diptera, have about 3000 species all over the world. It is a tiny flying insect with a piercing and sucking mouthparts. Usually females suck blood, while males suck the juice of plants.
Blood-sucking female mosquitoes are intermediate hosts of pathogens such as dengue fever, malaria, yellow fever, filariasis and Japanese encephalitis. Mosquitoes are distributed on all continents except Antarctica. The most famous ones are Anopheles, Aedes and Culex.