It is possible to have fertile eggs in the first year however some birds may not breed successfully until their second year. Laying normally starts during the first or second week in April. A hen can lay as many as 40 eggs in one season. She will lay 6 - 12 in each clutch which should take 23 days to hatch. 2 - 3 hens are often kept with one cock which can put less stress on each hen as the males can become quite aggressive towards them in the breeding season. We have found however that hens can be rather aggressive creatures to one another at times so it is possible to end up with a hen having a hard time from all her company in the aviary. A careful watch on birds when they are introduced is a necessity to make sure all the birds are settling well together.