"Kabiraj Pradhan (55) was nabbed by an anti-poaching squad from Ujjala Bhagabanapur under Tangi wildlife range," DFO (Chilika) Bikash Ranjan Das said.
The poacher might have killed the birds after trapping them in the lake, he said.
Twenty poachers were arrested and over 100 migratory birds killed in Chilika area during the last five months, he added.