Why are you feeding meal worms to wild birds? If you have a captive or injured bird, they're excellent, but if a wild bird is out there anyway, let them eat the normal worms that come their way.

It adds up, buying meal worms, so you should get a plastic bucket with a tight lid, put a few air holes in, fill the tub with oatmeal and dump your meal worms in. Keep it in a dark, dry, room-temperature place. Every so often take a thin slice of potato and drop it in on top of the oatmeal. Open it periodically and scoop out some worms. Ignore the beetles, they're the ones making new worms.

SRS