How do you restart duck life 3?

My cockatiels have been mating for several month. but no eggs.my male has been going in the box but not the female.anything i should do? Do finches and hummingbirds get along? What do jap quails eat? What is Iraq's national bird? Is the flamingo an egret? List 10 examples of onomatopoeia? What is the Provincial bird of Maharashtra? What is the difference between a duck call and goose calls? What is the anatomy and appearance of a puffin? What is a good nickname for an flaaffy? Why do birds peck their feathers? Do bald eagles make nests? Do Birds brood on their eggs to help them hatch.? Is duck imprinting learned behavior? Is a pekin duck aggressive? How did bird raptors get there name raptors? What do you call a bird in Hindi? What things do you need to look after a hawk? Does a hawk eat an apple? How fast does a fly lay eggs?