My 1 year old finch from the pet store laid one egg and her chest is featherless. Will they grow back soon? One vet said to take egg out, asap. She's a single bird.
Removing the egg will probably result in more eggs being laid. Her chest is bare because she "feathered her nest". They should grow back. If you get her a mate, they will raise babies. There is nothing more cheery than a flock of finches. Make sure she has a calcium source. Cuttle bones are great. She will enjoy sprays of millet. You can grow your own bird food by planting some of your bird food. A leaky aquarium makes a great green house. Cover it with a piece of glass or a sheet of Saran wrap or other plastic to keep the moisture in and put it in a place that gets sun. Transplant the plants outside when weather permits. Check with your local County Agricultural Agent or your state Department of Agriculture for more help. Find a good finch husbandry website. Check out the library. Check out local bird clubs and breeders. There is a lot of good information out there and a lot of misinformation. Look up the AAV - Association of Avian Veterinarians. AAV vets are usually pricey, but they know a lot more about birds than the average bear.