Why didn't my budgie's eggs hatch? Can females lay infertile eggs?

If your budgies are healthy and there is a nest available, the female will likely lay eggs. They can also lay eggs even if they haven't been bred. if you don't want to raise more babies you can simply remove the eggs as they are laid, or remove the nest itself.

It would depend on if the eggs are fertilized or not. If you only have female budgies the eggs will not be fertilized and will not hatch. If you have a mating male with female I would recommend keeping the birds in a quiet location that is low stress. The female bird will care to the eggs and keep them warm. If you find she is leaving them in the open you. An put material in the cage so she can build a nest.

Incubation in budgies is about 18 days from the day the hen begins sitting on The eggs. You are probably correct in saying the eggs are infertile. If there is no male present, they are definitely infertile. Wait until Coco loses interest, then remove and discard the eggs. This will prevent her from laying "replacement" eggs. Remove the nest box afterwards.

Female birds lay eggs with or without males. They are just not fertilized. You may let her keep the eggs or you may throw them away. Scoobie will continue to lay eggs throughout her life. Please post again if you have any further questions!

My condolences on the loss of your male budgie. Do not throw the egg away without replacing it. This may spur her to lay more. You can replace the egg(s) with dummy eggs. Find them in the Avian section of the local Petco. Leave the dummy eggs in the nest box for 2-3 weeks, then remove one every few days until none remain. Hens will lay eggs regardless of whether or not they mate. To stop egg laying, limit exposure to daylight (use a cage cover or move them away from windows, light sources, etc.) and lower room temperature by a few degrees. To prevent mating, you will need to separate males from females.

If you don't have a male parakeet along with your female, then the eggs are not viable anyway and should be removed. If you're attempting to raise a clutch, I would make sure the egg stays in the nest in the hopes she moves it back over and sits back on it.

The incubation time for eggs is about three weeks so if they had not hatched in that period they were likely not viable and it is possible the female kicked the eggs out of the nest. You can check the bottom of the cage to see if any egg pieces are there. Making sure both birds are on a balanced diet with calcium supplements for the female and enough natural sunlight can also help ensure healthy egg laying if you are looking to breed.