Chinese merganser: Their incubation period is full of difficulties 17-05-23 03:08 Updated BJT
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It is not a safe journey for the Chinese merganser to incubate its ducklings. Not only do they need to chase away mandarin ducks that want to occupy their nests, but they also need to deal with the harassment of others.

Editor: LiuYing
17-05-23 03:08 BJT
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