This is Garuda is kneeling with his hands in Anjali Mudra. He is supported by a rectangular platform which is mounted on a socket. This is meant to be mounted on a pole and carried in procession. See the hole at the lower end of the socket.
Garuda is identified by the wings (attached to his upper arms), beaked nose and cobra as earrings. Garuda’s kneeling and Anjali mudra depict his devotion to his Lord, Vishnu.
The Vigraha is about 15 cm in height and it is from Tamil Nadu. The book Manual on the Bronzes in the Government Museum, Chennai has an example of similar but standing Garuda (Page 183). That Vigraha is dated to the seventeenth century.
The painting, from the British Museum https://www.britishmuseum.org/collection/object/A_1996-1210-0-1, shows Vishnu’s attributes Shankh and Chakra being carried (circled portion) in the procession. This Garuda would have been carried in a similar manner.