If we are raising chickens, we might not aware that chicken plumage falls down on daily and falling increases at a certain time.
Based on internet resources that temperature is the main factor to cause falling of chicken's feathers. As degree of coldness drops in certain seasons, the chickens cast off, might resemble leaves dropping down from the trees.
Moreover, another factor that "broody chickens may begin to molt once they have finished caring for their chicks."
So, we no need to worry or wonder, because chickens molting is a natural process. The old feathers will be replaced by new ones.
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