Domestic trade in peacock feather is allowed only as long as the feathers are naturally shed by the bird.
"But the shedding cycle comes only once in the monsoon months. Rest of the year the feathers are plucked forcibly which results in fatal injuries to peacocks," Dr Shekhar Kumar Niraj, head of wildlife trade monitoring network TRAFFIC, told PTI.
Plucking of the plumage causes immense pain and bleeding which can even lead to death, he said adding that even if it survives, the peacock might loose its breeding power.
Officials of the Wildlife Crime Control Bureau (WCCB) in New Delhi admit that it is often difficult to identify whether the feathers are forcibly taken or naturally shed.
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The feathers of the male peacock are longer and the buyers find them more attractive.
"As the male ones are more vulnerable it causes a gender imbalance in the population which affects reproduction," Niraj who is conducting a study on the issue said.