behaviour and breeding
i have a pair of cockatiels. they mate regularly and often frequent the nest box either one or both of them together. but they laid no eggs. sometime ago i noticed that (not always but mostly) when the female cockatiel enters the nest box the male starts to sing( like a mating call, whistling) and move here and there on the perch and then she comes out. (and after that he sometimes goes into the nest box himself)
is it normal? oris there a problem? when will they lay eggs?