Young Blue Jay help

[cryllc]

Hi, yesterday my sister had me come over and pick up a baby blue jay. It's just beginning to get feathers and fell out of a 30 foot maple. There are a ton of cats in the neighborhood so we couldn't just put it back. I need ideas and help on what to feed the little guy. I got some nightcrawlers that I snip up to bite size pieces but what else do I need to feed? I raised two baby robins last year from a tree that got cut down right outside so I do have some experience and I've raised a few baby pigeons and doves. Any information for the blue will be very welcome. Thank You All.