My baby bird hatched. How do I feed it and keep it from getting cold?

As long as the parents are taking care of the hatchling themselves, you shouldn't need to do anything as they will keep it warm by laying with it in the nest, and feed it as needed. It also seems like you are feeding lots of nutrition-filled items to your birds as well! It is a good idea to have some baby bird food and a syringe on hand that you can mix up if you need to help with feeding, or if the parents aren't caring for it. Most pet stores carry this and will have feeding instructions on the side of the bag. Congrats on the baby bird! It sounds like it and its parents are in good hands.

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!

You can hand raise baby birds if needed. It’s best to do as much reading as you can about the specific type of bird and what they eat. The parents will usually come back unless they have been injured. If you do end up taking the baby, she will likely be dehydrated so prepare a lightly sugared water to slowly syringe feed her. You will also need to keep her warm. Use either a red heat lamp or hot water bottle. Make sure it does not get too hot as a hatchling cannot move away from it if she gets too hot. You will need to hand feed her insects. Pick small worms like meal worms until she is bigger. I hope this helps!

You can definitely try to feed it, you will need to buy wet canned cat food such as Recovery or A/D (from your local vet) as well as a syringe, you will need to feed it every couple hours during the day (no need to feed during the night).

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

The easies solution is either Recovery from Royal canin or a/d from hills, both are wet foods designed for cats and dogs but are suitable for baby birds as well, you can draw them into a syringe and feed this bird (many times a day!)

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.