What are the meanings of "migratory birds"?

The meaning of migratory birds includes: constant migration, regular waiting and commitment.

Migratory birds? [hòu nio]

Explanation:

Migratory birds are birds that migrate with the change of seasons, such as cuckoo, domestic swallow and swan goose.

Many birds have the characteristics of seasonal migration along latitude. In summer, these birds breed in temperate regions with higher latitudes, and in winter, they spend the winter in tropical regions with lower latitudes.

In late summer and early autumn, these birds move from the breeding ground to the wintering ground, and in spring, they return to the breeding ground and fly north. These birds that migrate north and south with the seasons are called migratory birds.

Extended data

Residential type

According to bird migration's behavior, birds can be divided into different habitat types:

Resident bird:

Resident birds are those birds that have no migratory behavior. They live in their birthplace all the year round. Most resident birds will never leave their nests. Some resident birds will make short-distance migration without orientation.

In some cases, this migration is regular. For example, crows gather in the center of the city in winter and disperse to suburbs or mountains in summer. This regular short-distance non-directional migration is called "drifting".

Some species, such as snow chickens, migrate between high altitude and low altitude according to seasonal changes. This migration is called "vertical migration". Although it is called migration, it is still the behavior of keeping birds.

Some short-distance migrations are completely irregular and just wander with the change of food conditions. This kind of bird is actually a transitional type between resident and migratory birds.

Migratory birds:

Migratory birds are those that migrate. They travel back and forth between the breeding ground and the cold shelter along a fixed route every spring and autumn. In different areas, migratory birds can be divided into summer migratory birds, winter migratory birds, traveling birds and floating birds according to their appearance time.

If a bird is a winter migratory bird in its cold shelter and a summer migratory bird in its breeding ground (or summer resort), the area it passes through on its way back and forth from the cold shelter and breeding ground is a tourist bird. In a certain vast area, people who live in the mountains in summer and in the plains in winter are regarded as floating birds.

The difference between migratory birds and resident birds is not absolute. The same bird species may show different habitat types in different areas or even the same area for various reasons. The factors that determine the habitat type of a bird species in a place are local climate, food situation, habitat and so on.

For example, the red-crowned crane that breeds in Hokkaido, Japan, was originally a summer migratory bird. As the local people continue to feed it regularly in winter and give it a stable food source, some red-crowned cranes give up the instinct of migration and become local residents.

Another example is the curly tail of passerine birds, which are resident birds in Hainan Island and Yunnan in southern China, summer migratory birds in the Yangtze River basin and North China, and floating birds in Europe.

References:

Baidu encyclopedia-migratory birds