Last week my husband bought some live meal worms when he was ordering supplies from the bird food farm.
They arrived by post (weird, I know) I really don't like looking at them all wriggling about but the birds absolutely love them and they disappear within a few minutes. Great for photos too, the sparrows were first to find them this morning, closely followed by the starlings.
The adults are feeding their young now so probably glad of a few nice juicy worms.