My budgies are 4-5 months old, we brought them nearly 2 months before, they have laid eggs and female have sitted on it, and the male Also feeds her, are the eggs infertile and the chances of new born babies, in first time breed
It is possible that the eggs are infertile if your budgies are only 4-5 months old. Budgies typically reach sexual maturity around 6 months of age, so it is unlikely that they are capable of producing fertile eggs at this stage.
It is generally recommended to wait until budgies are at least 1 year old before breeding them. This allows them to reach full maturity and develop the necessary physical and behavioral traits for successful breeding. Breeding budgies before they are fully mature can lead to health problems for the parents and potential complications during the breeding process.