What is hatching hapa?

This structure has double walls. The outer wall is made of muslin cloth and the inner wall is made of round meshed mosquito net material. The dimension of the outer wall is 1.5 x 1 x 1 m and the inner wall minimum dimensions are 1 x 0.75 x 0.75 m. The eggs from the breeding area are shifted to hatching hapa and are uniformly spread here. The minimum time for hatching is 18 – 24 hours. When the hatchlings get out of the inner area, the mesh is carefully removed to dispose the egg shells.