Adaptation to the environment of morphological characteristics of birds

The ambient air is changing throughout the universe, and the earth is also changing because of human changes.

Answer]: The body is spindle-shaped, reducing resistance; eyelids, transient membrane retraction, scleral plates; tail feathers, flight feathers; **Thin and loose and tenacious feather activity and muscle contraction when flying, and the division of the feather bare area is conducive to the contraction of muscle collapse when flying; The bones are strong, thin, light, healed, toothless, the atlantoaxial vertebrae, the heteroconcave vertebral body is sharp-headed, the "V" shaped wishbones, the ribs have a hook process, the keel process, the healed argus, the coccygeal metacarpal bone, only three fingers, the forelimbs are specialized into wings, the iliac bone is healed with the healing recommendal bone, the fibula is degenerated into a spine-like shape, and the tibial tarsal bone and the tarsal bone form the intertarsal joint; The pectoralis major and pectoralis minor muscles are well developed; The digestive system is well developed, with glandular muscles and stomachs, and the rectum is short and does not store feces; Lungs with air sacs, complex bronchial network system, double breathing; Full double circulation; The nerves and senses are developed, the striatum is developed, the optic lobes are developed, and the eyes are large and are the dual regulation of vision; The higher posterior kidney, excreting uric acid, without bladder, is excreted with feces; Most females have only the left fallopian tube and ovaries.

According to the living habits and morphological characteristics of birds, birds are divided into eight types, namely songbirds, walking birds, climbing birds, pheasants, doves, passerines, chickens, and geese.

Habits of birds:

Birds are omnivores, and their diet includes nectar, seeds, insects, fish, carrion, or other birds. Most birds are active during the day, but some are active at night or at dusk.

Most birds have the ability to fly. Flightless birds include penguins, ostriches, kiwis, and extinct dodos. Every spring and fall, most of the birds flock in flocks and make bird migrations.

Every year when the earth returns to spring, birds begin to carry out a series of activities such as courtship, reproduction, nesting, incubation and brooding.

Morphological characteristics of birds:

1. Songbirds: Songbirds are generally small, light, lively and dexterous, good at chirping and singing, and skillful at nesting. Such as larks, orioles, great, magpies, willow warblers, etc.

Songbirds have a vocal tube below the larynx, which consists of a vocal cavity and a singing membrane, and the vocal organs (vocal tube and vocal muscles) are very well developed.

2. Climbing birds: Climbing birds are good at climbing on rock walls, stone walls, earth walls, trees, etc., such as woodpeckers, big cuckoos, hoopoes, parrots, etc.

The beak, feet and tail of climbing birds have a special structure: the beak is sharp as a chisel and is good at pecking and chiseling; The feet are strong and powerful, and the foot (foot) toes undergo a variety of changes, such as the four toes of a woodpecker, the two toes are held forward and the two toes are backward, which is suitable for climbing trees to fix the body; The tail feather shaft is tough, and the tail feathers play a role in supporting body weight.

3. Land birds: Most of the land birds are active and foraging on the ground, and there is a clear difference in the feather color of male and female, and the feather color of male birds is more gorgeous, such as China's unique brown horse pheasant, ring-necked pheasant, red-bellied golden pheasant, quail, etc.

Land birds have a strong physique, a hard and mostly arch-shaped beak, and are suitable for pecking; The wings are short and round, and they cannot fly long distances; The hind limbs are strong and powerful, and the Suitan liquid is good at walking and digging on the ground.

Summary. Hello, I am happy to answer for you, I have inquired for you: Hello Kiss Birds are usually spindle-shaped, with forelimbs evolved into wings, and feathers suitable for flying birds, also known as birds.

Definition: An oviparous vertebrate with feathered body surface, the main characteristics of birds are: streamlined body (spindle or fusiform), most of which live in flight.

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.

Hello, I am happy to answer for you, I have inquired for you: Hello Kiss Birds are usually spindle-shaped, with forelimbs evolved into wings, and feathers suitable for flying birds, also known as birds. Definitions:

The main characteristics of birds are that the body is streamlined (spindle or fusiform) and most of them live in flight. 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 trapped wheel ventricles, and the number of beats is rapid.

Constant body temperature. In addition to the lungs, the respiratory organ Wang Xixin also has multiple air sacs to assist breathing, so that birds can have oxygen through the lungs when inhaling and exhaling, that is, double breathing.

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 plexus source body are many gaps, filled with gas, so the body is light; The forelimbs are the wings of Li Hall, and the hind limbs walk, most of them can fly, and have a wide range of activities, and some of the wings are degenerate, and they cannot fly, and the activity area is relatively small, such as ostriches, penguins and most poultry.

Avian characteristics of ostriches: fast running ostriches adapt to the living environment: avian characteristics of penguins in arid areas:

Swimming penguins adapt to the living environment: polar, glacier crane bird characteristics: long beak, long neck, long legs crane adapted to the living environment:

Bird characteristics of the swamp vulture: Fly very high The living environment of the vulture adapts: high mountains.

1. Songbirds: There is a singing tube below the larynx, which is composed of a singing cavity and a singing membrane, and the singing tube and singing muscle are particularly developed. Generally small, light, lively and dexterous, good at chirping and singing, and skillful at nesting, such as larks.

Songbirds are the most abundant category, accounting for 3 5

2. Climbing birds: the structure of its beak, feet and tail is very special, good at climbing on trees, such as woodpeckers, the beak is sharp as a chisel, the feet are strong and useful, the two toes are forward, the two toes are backward, suitable for climbing trees, the tail feather shaft is tough, and the tail feathers play a role in supporting body weight.

3. Land birds: strong physique, hard beak, strong and powerful feet, suitable for digging soil, mostly foraging on the ground. Generally, there is a clear difference in the plumage color of males and females, and the plumage color of male birds is more gorgeous, such as peacocks.

4. Birds of prey: with sharp beaks and claws curved like hooks, powerful wings, can soar or glide in the sky, and hunt live prey in the air or underground. Like an eagle.

5. Wading birds: the beak, neck and feet are relatively long, and the toes are also very long, suitable for wading, can not swim, and often inserts a long beak into the bottom or ground to feed. Such as a heron.

6. Migratory birds: have wide or pointed beaks, webbed membranes between toes, walk and swim backwards, good at swimming, diving and obtaining food in the water. Not good at walking on land, but flying fast and mostly living on water.

The body tends to be streamlined, and this one is the most noticeable.

They all have wings and their mouths are pointed.