Chintamoni Kar Bird Sanctuary (CKBS),[1] formerly known as Kayaler Bagan,[2] is a bird sanctuary located in West Bengal, India, south of Kolkata.

This garden is famous for its wide variety of birds, butterflies, ferns and orchids.

The government of West Bengal took the initiative to make it open to the public and acquired it from private owners in October 2005.

On 8 September 2004 it was named Narendrapur Wildlife Sanctuary, and on 21 October 2005 it was renamed Chintamoni Kar Bird Sanctuary, in honour of celebrated sculptor Chintamoni Kar, who had for many years strived relentlessly to give "Kayaler Bagan" the status of a sanctuary.

[5][6] The nearest populated place, Narendrapur, is 15 km from Sealdah on the Sealdah – Sonarpur line and is part of the Kolkata Suburban Railway system.