I found an unharmed baby bird. What should I do with the fledgling?

The best solution would be to contact a local wildlife rehabilitator. One in your area specializing in avians should be able to identify it. The bird looks to be healthy, so you've been doing a good job. The rehabber can confirm this then let you know when the bird can be released. Search online, contact a local veterinary clinic or check the California Department of Fish and Wildlife website to find a rehabilitator.

The best thing to do is to find a certified wildlife rehabilitator. Don't try to feed it until you do. Feeding the wrong foods accounts for more problems than going without a short time. Local DFW may have a list on thier website or call local vet clinics that see exotics. They may be able to help. Keep in a warm, quiet place. Minimize handling. Here's basics. http://www.wingsofhoperehab.org/injured_animal.html

His best chances will be to stay with his parents. If you can see where the nest is, you may briefly pick him up to place him back in the nest. Most birds do not actually have a very good sense of smell, so your scent won't cause a problem - however, your presence will frighten the parents away. If you cannot return him to the nest, the best course of action depends on how old he is. If he's got feathers and can hop, he's probably a fledgeling who is learning to leave the nest and you should leave him alone. If he's just starting to get his feathers and seems bright (can lift his head and look around), make sure he's in a safe spot (you can make a little nest on the ground with a clean towel in a small box - but don't move him far from where you found him, so his parents can find him there too) and see if the parents come to feed him. If you're convinced he's on his own, or if he's too little to have any hope of surviving on the ground (even if the parents stop by to feed him), then I recommend finding your closest wildlife rehab location and calling to see if they'll take him. Hope this helps!

I am sorry to hear about your situation. It sounds like she defintely needs medical attention. I would see if your parents can drive her to a rehab center or some rehab volunteers will pick animals up so perhaps you can find someone to do this. You can look at https://www.nwrawildlife.org/page/Find_A_Rehabilitator and https://www.humanesociety.org/resources/how-find-wildlife-rehabilitator to try to find a rehabilitator near you. Until then I would keep the bird in a quiet dark place and handle it as little as possible.

It looks like it may indeed be of the Warbler species. These birds typically eat insects, so small crickets or mealworms would be recommended. Ideally, you should contact a local wildlife rehabilitator for assistance. A rehabber will have the knowledge and experience to give the bird the best chance at eventual release.

Hello, the little bird likely fell out of his nest. If it hasn't been too long, you can take it back to where you got him to see if his nest and mother is still there, which would be best case scenario. Otherwise, it may take him some time to learn to fly on his own and you'll have to wait until his flight feathers grow fully. In the interim, you may continue to feed him baby food, or you may start to offer seeds, fruits, and veggies. Hope this helps and best of luck.

The thump into the window appears to have caused physical injury and possibly neurological damage. This would have to be confirmed by a veterinarian. The bird may recover, but it could take some time and may require extensive supportive care. Ideally, it should be examined by a wildlife veterinarian or relinquished to an experienced wildlife rehabilitator. If treatment is not possible, humane euthanasia may have to be considered. Keep it warm and as stress free as possible. Prop the bird up with a towel and wash your hands thoroughly before and after handling. Use a dropper or small syringe to provide water. Offer a fortified seed mix for finches. You can also try a handfeeding formula for extra nutrition.