I rsised a female baby house finch from about that age. We got her baby parrot formula and kept it warm and slightly thick. She would take it from a dropper down into the area in her throat that had the bright marks inside to help the parents hit the right spot. I think we fed her every hour or so and over night if she started screaming for food. After a while she would sleep through the night and get fed during the day when she demanded it. She slowly self weaned and bonded to us so we decided she needed to stay with us.
She was happy, stole our food and would bathe in any low filled water bowl while we held it.
She played with her toys, sang, and got a year and a half she wouldn't have.
Care of baby starlings including info on how to keep a nestling warm, what type of formula to feed it, how to handfeed it and how often to do so.
Found Spee when he was about 2 days old. Kept him in a small tupperware type bowl that I lined with paper towels and then put that bowl in a larger container. Placed a heating pad on low under half of the larger container. Used the baby bird diet on Starling Talk but didn't add the egg. Fed him using a wooden coffee stirrer. Bought a box of them at Smart and Final. When he got a bit larger I moved him into a terrarium which I lined with paper towels and once again placed the heating pad under half of the terrarium. Forgot how old he was when I started offering foods he could eat on his own....millet, Volkman Avian Science finch seed, cooked mixed veggies (peas, carrots and corn) and then later I added Mazuri Insectivore. Hope you are able to save the little one. Thanks for taking him/her and trying to help.
Probably too thick, get some baby parrot food till you figure out something better. Beeper would eat till her crop was a big bubble on her chest then happily fall asleep for a while.
You can mix it really thin and make it thicker as he gets older and bigger.
Use the Starling Talk recipe as per the link I posted. Don't use the puppy food. Use dry cat food as per the recipe. Get some wooden coffee stirrers and use those to feed the baby.
Spee's food was the consistency of oatmeal but thin oatmeal at first and then as he got older I made it a bit thicker. Also if the little bird imprints on you then I would not recommend