The invention provides a device, a system and a method for handling, grading and vaccinating living birds, wherein the device (1) comprises a main member (10)； a receiving member (20) rotatably attached to the main member and configured to receive and hold the birds by their scapula-humeral joints in a first position and to release the birds in a second position； and a locking member (30) movably attached to the main member and configured to lock the receiving member in the first position and to release the receiving member to rotate from the first position to the second position to release the birds.
