Heilongjiang Dongsheng Wetland Migratory Bird Patrol Notes | CBCGDF CCAfa Reports

In the spring of 2023, migratory birds passed through Dongsheng Wetland in Heilongjiang. Compared with last spring, there were fewer geese and ducks. The reason is that the cultivated land near the wetland had been plowed last fall. After the farmland surrounding the wetland was plowed last fall, the birds' food sources (such as corn, soybeans, rice, etc.) were gone. In this way, by this spring, migratory birds such as geese and ducks lacked food sources, and their population would be relatively small. At the same time, geese and ducks spent less time here this spring.

This fall, the number of wild geese has increased. Because there was a large amount of late corn harvest around the wetland this fall, the wild geese stayed here longer. The farmland or cultivated land around the wetland reserve suffered from autumn water-logging due to heavy rainfall this autumn. Local farmers delayed harvesting corn, leaving some corn scattered on the ground to become food for the geese. The geese therefore extended their stay.

There was a heavy snowfall around November 9, 2023. On the second and third days after the snowfall, when the heavy snow basically covered the entire farmland, the wild geese flew south and were hard to be seen.

In addition, the number of wild geese that fly north to breed in spring must be several times greater when they return south than when they fly north (bringing back a large number of young birds).


 


 


 

Original article:https://mp.weixin.qq.com/s/1zVVt1_pmxwI91CP8DZ4lg

Translator: Daisy

Checked by: Sara

Editor: Daisy

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