"But worms are also
good food for birds, so they'd better watch out! In the Spring,
when birds are building nests, they need trees to give them a high,
safe place to live. Birds catch worms and other insects and feed them
to their babies. Birds also eat seeds and when they do a dropping, they
leave the seed far from the tree, where the tree could never put it. So
the trees need the birds, and the birds need the trees.
