My zebra finch is dying of old age. What care can I provide?

If she hasn't mated and raised young before then I would say 2 may be too old for a zebra finch for her first clutch. But if she is already raising young she can continue for another couple of years. I would try to limit her to 2-3 clutches a year. Zebra finches usually live 4-7 years in captivity though some have been known to live longer. https://vcahospitals.com/know-your-pet/finches-general

That can be a general sign of illness, especially if he is sleeping on the floor of the cage (it's hard to tell from your photo). Keeping him warm and eating and drinking can help, however since the behavior has been ongoing for a week it is best to bring him to a vet for a complete exam. Birds are great at hiding illness, so ruling out any issues such as nutrition problems, infections, illnesses, etc with your vet is best.

Thanks for reaching out about your finch and including photos. A veterinary visit is recommended but understand if one is not available, but only limited things can be done at home. Weakness can have multiple causes, with infections being only one possibility. Provide heat support in the 80-85 F range can give some support. Finches eat primarily seed but also need a vitamin/mineral/protein support in the form of a wide variety of vegetables. Provide a soft bedding/towels on the bottom of the cage to protect if falls. Good luck.

It sounds as if your female may be sick and it would be best to bring her to a vet ASAP. It is possible she is exhausted from laying the eggs due to malnutrition, has an illness, or even has a stuck egg that is making her ill. Seeking veterinary care in person ASAP is best to try and get her feeling better. You may also need to separate her into a warm hospital cage until you can get to the vet to help make her more comfortable and reduce stress.

Remove the cage to a cooler area of the home. Lightly mist her with water or provide a bowl she can bathe in. Make sure she is drinking to keep hydrated and eating normally. If she doesn't perk up in a few hours, you will need to find a veterinarian or an experienced avian veterinarian to examine her.

If your entire flock is experiencing illness and then death, it would be best to seek veterinary care in person ASAP to try and find the underlying cause and provide treatment. It would be best to remove any sick or sick looking birds from the flock and move them to isolated hospital cages to avoid spreading illness or disease among the remaining healthy birds and losing the rest of the flock. Once the underlying cause is found, you can then take measures to both treat and preventively avoid further illness.

There is no way for us to tell you how long Pepper has to live. No one can really predict that. To get the best idea of his health you would need to have him examined by an avian vet and have some blood testing done. There are reports of cockatiels living as long as 32 years, the oldest confirmed specimen reported being 36 years old. Proper diet and exercise are major determining factors in how long a bird will live.