Information on bird knowledge, information about bird knowledge

1. Species of birds in China.

China is the world's most abundant bird resources of the country, according to statistics, China has 1371 species of birds, accounting for about 15% of the world's bird species, China's bird resources are not only rich in species, but also have many special species, there are 9 species of cranes; 46 species of geese and ducks; 28 species of pheasants; There are 117 species of birds in the thrush family. There are 69 species of birds that are special to our country.

2. Ecological taxa of birds.

The extant birds in China can be divided into six major ecological groups:

1) Migratory birds: webbed between the toes, well-developed tail fat glands, good at swimming or diving. Geese and ducks.

2) Wading birds: with long beak, long neck and long hind limbs, it is suitable for wading life. Cranes.

3) Land birds: short and round wings, strong hind limbs, good at running, and arched beak, which is easy to peck. Pheasants.

4) Birds of prey: beaks, claws with sharp hooks, predatory or carnivorous, scavenging, females are more than males. Falcons.

5) Bird climbing: The toes undergo a variety of changes, which are suitable for climbing. Parrots.

6) Songbirds: There are many species, widely distributed, well-developed chirping organs, and good at chirping. A variety of passerine birds.

3. Bird migration.

In autumn, many birds that breed in the north fly to the south with their young in flocks to spend the winter, and return to the north the following spring to lay eggs and raise their broods.

4. Bird ringing.

Bird ringing is a method of using special metal rings or colored plastic rings with the mailing address and unique number of the National Ring Chronicle Center to mark individual birds, and to study bird migration through observation and recording.

According to the ring and ** information, the breeding area and wintering area of different populations can be drawn in detail; Determine the migration schedule of birds, identify normal migration routes and important stopovers; determine the lifespan of the bird, analyze the cause of death; Investigate annual population trends and the impact of environmental changes on bird populations. It provides a scientific basis for formulating reasonable policies for environmental protection and bird resource protection.

5. How to protect birds.

1. Do not hunt wild birds;

2. Do not frighten or disturb birds;

3. Do not eat wild animals;

4. Do not buy wildlife products;

5. Do not buy illegal hunting tools;

6. Take care of forest trees, flowers and plants, and protect bird habitats;

7. Be a volunteer for bird protection and promote the knowledge of bird protection.

According to the relationship between birds and modern humans, there are 9 groups of ecological birds, edible birds, hunting birds, service birds, medicinal birds, family birds, feather birds, ornamental birds and beneficial birds.

1.Ecological birds: Bird ecology is related to human ecology, and birds are called ecological birds.

2.Food birds: the economic potential of birds to domesticate poultry, and wild birds with the potential to domesticate poultry.

3.Hunting birds: Strictly speaking, all birds hunted by humans for meat, eggs, or feathers fall under the category of hunting.

However, sometimes people do not hunt their egg-laying birds in order to obtain their eggs, which should also fall under the category of hunting birds. China's stone pheasant, partridge, bamboo pheasant, golden rooster, wild goose, bean goose, ruddy shelduck, green-winged duck, hairy-legged sandgrouse, bead-necked turtle dove, bone top chicken, etc., are all famous hunting birds. For hunting birds, it is necessary to implement the policy of "protecting, raising and hunting at the same time".

That is, rational hunting, actively carry out the domestication and semi-domestication of wild birds, and protect the female and young birds during the breeding period.

4. Service Birds: Ostriches are the largest birds in the world. The largest ostrich transport station in Mauritania has hundreds of ostriches.

The ostrich has a small three-colored flag tied around its neck for short-distance packers, and a colorful back cushion is laid on its back. The ostrich has a small black flag tied around its neck for short-distance transportation, and a rattan basket is attached to its back, which can hold a lot of goods. Long-distance transportation ostriches, can transport goods, can also carry people, can walk 500 kilometers at a time l Those ostriches are dressed in red and green, and there is a band that blows and blows, and the ostrich team dedicated to picking up and dropping off the bride is naturally more beautiful

Ostriches are even more skilled in shepherding sheep than sheepdogs. A police officer on a farm in South Africa trained a tall rice (8 feet).Weighing 136 kilograms (300 pounds), the great ostrich always holds its neck high and watches everything warily.

Ostriches often run back and forth, driving the stray sheep back to the flock in time. If a wolf or a sheep thief comes, the ostrich can kick them and cut their ribs and cut their belly with their sharp claws. Shepherding sheep for 3 years, shepherding hundreds of sheep for the farm, and never lost a single sheep.

Ostriches can't fly, but they run extremely fast. Athletes rely on their superb riding skills to control the ostrich race, which often reaches speeds of more than 50 kilometers per hour.

5.Medicinal birds (medical birds): Birds whose whole body, internal organs or their metabolites can be used as medicine to treat diseases.

6.Birds: Birds used in scientific research.

7.Feather birds: provide humans with down, decorative feathers, carving feathers and other raw materials. It is used to make various light industrial products, toys and arts and crafts, arrows and feathers are made from the tail feathers and feathers of large eagles, and pheasant tail feathers are used as decorations.

8.Ornamental birds: Birds that have ornamental value are called ornamental birds.

9.Beneficial birds: The vast majority of birds living in nature are natural enemies of agricultural and forestry pests (beasts), and some of them even feed almost exclusively on insects.

They guard forests, orchards, and fields all year round to hunt insects and eliminate pests for farmers. Birds of prey remove rotting flesh and filth and debris, play an important role in protecting agricultural and forestry production, and compete for the natural environment, and also play a great role in promoting the recovery of animal populations.

1. Birds, also known as birds. Definition: An oviparous vertebrate whose body surface is covered with feathers, the main characteristics of a bird are:

The body is streamlined (spindle or fusiform) and most of the flight lives. The body surface is covered with feathers, and the forelimbs generally become wings (some species have vestigial wings); well-developed pectoral muscles; The rectum is short, the amount of food is large and the digestion is fast, that is, the digestive system is developed, which helps to lose weight and is conducive to flying; The heart has two atria and two ventricles, and the number of beats is rapid. Constant body temperature.

In addition to the lungs, the respiratory organs also have multiple air sacs to assist breathing, so that birds can breathe oxygen through the lungs during both inhalation and exhalation, that is, double breathing.

2. A general term for birds, which are higher vertebrates adapted to life on land and in the air. Long feathers, which can maintain a constant temperature of the body; There is a protruding keel protrusion on the chest, and the bones of the whole body are hollow and filled with gas, so the body is light; The forelimbs are winged, the hind limbs walk, most of them can fly, they have a wide range of activities, and some of the wings are degraded and cannot fly, and the activity area is relatively small, such as ostriches, penguins and most poultry. beaks, toothless, and some bird species have migratory behaviors.

Greatly improves the survival of chicks. Birds can nest, incubate, brood, and migrate. There are many types and quantities, and traces are found all over the world.

Some birds live and breed in its reproductive area all year round, and do not migrate due to seasonal changes, which is called "resident birds"; There are also some birds that migrate from south to north in spring and from north to south in late autumn on time, and this kind of bird is called "migratory bird". Birds are closely related to humans. Poultry can provide meat and eggs; Some beneficial birds can eliminate pests and rodents, and protect crops and trees, such as swallows and owls. Some birds are available for viewing.

In order to protect the ecological environment, it is necessary to take care of beneficial birds and prohibit hunting.

Archaeomycetes:

Archaeopteryx lithographica, in the case of Archaeopteryx lithographica, it could also be a dinosaur, in which case the subclass would be abolished.

Present-day bird subclass: includes some fossil birds from the Cretaceous period as well as extant birds.

Fossil birds: Represented by the order Dusk and Ichthyomycetes, their skeletons are similar to those of modern birds, but the upper and lower jaws have alveolar teeth.

The extant birds of the subclass Birds can be classified into 3 general orders, namely:

1. Flat-chested heading.

It is the largest bird in existence (135 kg in weight and 2 5 m in height), and is suitable for running life. It has a series of primitive characteristics: vestigial vestiges, no keel protrusions in the sternum, no tail heald bone and tail fat glands, uniform distribution of feathers (no distinction between feathers and bare areas), no feather hooks on the branches (and therefore no pinnae formation), well-developed mating organs in males, and reduced toes adapted to running life (2 3 toes).

The distribution is confined to the southern hemisphere (Africa, the Americas and southern Australia).

The most famous representative of the Flat-chested General Order is the ostrich (Struthio camelus) or the African ostrich, while the other representatives include the American ostrich (Rhea americana) and the emu (or Australian ostrich) (Dromaus nova-chollandeae). In addition, in New Zealand there is a kiwi (apteryx oweni).

2. Penguins.

Medium and large birds of diving life have a series of characteristics adapted to diving life. The forelimbs are fin-shaped, suitable for paddling. It has scaly feathers (short, broad shafts with narrow pinnae) that are evenly distributed on the body surface.

The tail is short. The legs are short and move to the back of the torso, and the webbed toes are adapted to swimming. When walking on land, the body is nearly upright, swaying from side to side.

Subcutaneous fat is well developed, which is beneficial for maintaining body temperature in cold areas and in water. The bones are heavy and not inflated. The sternum has a well-developed keel protrusion, which is associated with forelimb strokes.

Swim fast, some call it "underwater flight". Distribution is limited to the southern hemisphere.

The general purpose of the penguin is represented by the king penguin (aptenodytes patagonicus).

3. Protrusion of the chest.

The poracic order includes the vast majority of extant birds and is distributed throughout the world, totaling about 35 orders and more than 8,500 species. Their common characteristics are: well-developed wings, good at flying, and the sternum with keel protrusions.

Finally, 4 6 coccygeal vertebrae healed into a coccygeal metaphysis. It has inflatable bones. The main feather is well developed, constituting a feather piece, and the body surface is divided into a feather area and a bare area.

The vast majority of males do not have mating organs.

Opened the mouth to meet and on the plan to invigorate the machine, after a flash the switch environment switch issued the republic to see the slightest look at the tree to establish seems to be immediately immediately invigorated.

Introduction: Birds are usually feathered, oviparous animals, with a very high metabolic rate, and the long bones are mostly hollow, so most birds can fly. The first birds appeared about 100 million years ago.

Their bodies are spindle-shaped, their forelimbs are specialized into wings, their body surface is feathered, their body temperature is constant, their muscles and thorax are developed, their bones are healed, thin, hollow, and their brains are relatively developed. Having an air bag allows for double breathing, and not having a bladder can reduce body mass. These physical traits are well adapted to flying.

Are there several types of birds, good birds and harmful birds?