How may weeks can cockatiels lay eggs?

A hen cockatiel, if sexually mature and provided with a suitable nest box and a mate can lay eggs for multiple weeks. After her fertile eggs hatch, she may lay another clutch of eggs after just 2 weeks! Some cockatiels might lay two or three clutches in a row while others may stop laying eggs for several months before she starts again. Most egg-laying hen cockatiels will lay once or twice a year when kept as pets, but some hens will lay more often.