Chickens lay eggs even when they aren fertalised.. do all birds lay eggs when they are not fertilised?
Actually, most egg layers do. Lizards, birds, fish… they will lay eggs even when there is no male. When their body is ready to produce eggs, they will seek out a mate, but if none is available, they will still create eggs… Sometimes the eggs are reabsorbed by the body, but usually they are deposited, just as if the animal was going to hatch them.
