I have a baby blue jay and don't know what to do.

The only advice we can really give you is to make the responsible decision to surrender it over to a licensed wildlife rehabber.

Even if you don't know of one in your area, you can often take the bird to your closest vet and they have the necessary information/means to get the bird transported.

The short end of the story is that you trying to rehab the bird will only place it at a disadvantage since you're not experienced at raising wild baby birds and as you've stated - have no idea what its dietary needs are.

I understand you're trying to do what's best and you don't want to see him get eaten - but you just have to accept the fact that you're simply not qualified to bring the bird up successfully, and if you try - chances are it will eventually die regardless.

Better to save yourself the guilt of trying to keep it on your own (which is illegal anyways) and do the right thing by taking it to someone experienced in the affairs of rehabbing wild baby birds.

Where I live, we have a program that saves wild birds called The Pelican Man. Wherever you live, I'm sure there's a program or organization that will take the bird in and they'll know what to do to help the bird then set it free. Look in the yellow pages and ask around to find help!

Let nature take its course your breaking the law by keeping a wild animal... those laws are in place to protect the animals from an even longer and slower painful death. Or take it to a wildlife center near you.

But I beg you if he is already flying put him back outside. They fly a few feet and return to the nest while learning you have done far far more harm than good. Please dont be selfish and give this animal a chance put him back outside now.

Hand feed it and wrap it for warmth and realease it when it's an adult