What to feed a nearly fleched English Black Bird chick?

St Tiggywinkles is a charity in the UK with a lot of experience with raising orphaned baby birds. Blackbirds eat a mix of mainly insects and worms + some fruit and seeds. The chicks need worms and insects. The charity website gives a recipe for feeding orphaned birds.

Hope that helps.

look under fact sheets, birds.

Blackbird Chicks

You could always go to a local pet store and look for Kaytee's exact. It's a handfeeding formula mostly used for exotic birds, but I have seen it used by vets to help rescued babies. It has the exact nutritional requirements that they need as babies, just use an eyedropper since you aren't too familiar with handfeeding. When the baby starts to refuse these types of feeding, then you should move to the other foods. But for now, it's probably too young for the foods your feeding it.

i've never heard of that kind of bird, but I've always just fed my babies worms, you buy the nightcrawlers for fishing and chop them into smaller pieces, or catch grasshoppers and pull the hind legs off before feeding them to the baby birds. If you can't do that them get some mealy worms to feed them. I don't really like the whole mealy worm thing, because it takes more of them, and they turn into beetles really fast.

Good luck with your new baby bird!