Which birds migrate?

Birds are divided into resident birds, migratory birds, wandering birds and wandering birds according to whether they migrate and how they migrate.

(1) Resident birds

Birds that stay in their habitats all year round are collectively called resident birds. Resident birds generally inhabit the same area all year round, or they only migrate short distances along hillsides.

(2) Migratory birds (migrant)

refers to regular migration routes (migration

route) as the seasons change throughout the year. ,

Birds that migrate long distances between breeding and wintering grounds. Migratory birds usually migrate twice a year, once in spring and once in autumn. Most spring migrations are from south to north, from wintering areas to breeding areas. Autumn migration is mostly from north to south, from the breeding area to the wintering area, but almost no bird flies directly from its breeding area to the wintering area, and it has to stop at suitable stations many times along the way. . The annual migration times of various bird species rarely change. The migration routes are also fixed all year round, and they often fly along certain terrain, such as rivers, coastlines or mountains. Many species of birds migrate south and north via the same route. The migration pathways of various birds are different. When migrating, large birds such as geese and cranes often gather in groups and form a "one" or "human" formation; while smaller birds such as barn swallows form sparse flocks ; Birds of prey often fly alone during migration, and a certain distance is always maintained between individuals. The vast majority of birds migrate at night to avoid attacks by natural enemies, especially insectivorous birds, while most raptors migrate during the day.

1: Summer migratory birds (summer

resident) are migratory birds that breed in a certain area in summer, leave for warmer areas in the south to spend the winter in autumn, and then return to this area to breed in the following spring. In this area, it is called a summer migratory bird.

2: Winter migratory birds (

winter

resident) spend the winter in a certain area, fly to the north to breed in the following spring, and fly to this area again in the autumn. Birds that overwinter, as far as the region is concerned, are called winter migrants.

3: Traveler

or

migrant When migrating birds pass through a certain area on the way and do not breed or overwinter in this area, these species Called the traveling bird of the area.

Thus, the same bird may be a summer migratory bird in one area, but may be a winter migratory bird in another area.

(3) Straggler

bird

During the migration process, due to strong winds or other drastic changes in climatic conditions, it drifts away from its usual migration A bird that stumbles upon a path or perch in a foreign place.

(4) Wanderer

bird

Wandering, also known as "wandering or hunting", is an irregular activity. Wandering appears to be caused primarily by fluctuations in external food conditions. Safaris are mostly limited to a few birds of prey and marine birds.