When do migratory birds return to the north?

Migratory birds migrate periodically with different seasons. 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.

Introduction of migratory birds:

Oriental white stork is a large wading bird, a national first-class protected animal, with about 2,500 birds in the world. Breeding begins in March every year, mainly distributed in northeast and north China, and overwinters in the lower reaches of the Yangtze River and Jiangnan.

White crane is a large wading bird, which is a national first-class protected animal, with about 3,000 in the world. White cranes breed in northeast Siberia, migrate in large groups in autumn and spring, and spend the winter in the middle and lower reaches of the Yangtze River.

Seagull is a national first-class protected wild animal and is listed as an endangered species. Ordos population is the largest gull population in nature, with a maximum number of 16000. The breeding period of seagulls is from early May to early July, and it moves southward in June at 5438+ 10. From Ordos to Bohai Bay is a relatively fixed migration route known at present.