Just found a magpie prefledgling in the garden. Clearly can't fly yet (and has bare knees!)- what do I do?! So far I've put down a large saucer of water near it (we always have some in the garden but this is closer) which it seems to be taking advantage of, although very nervously. It's already close to the bird food and I've put down some mealworms in water and a suet ball on the floor close to it.
It has found some shelter, although not cat proof, and the nest (I assume, can't see it) is in a tree far higher than I can get.
What can I do to help increase its chances of survival?