Meal worms, the stand-by food of bird fanciers who keep soft-bills as
pets, are a real delicacy and are very beneficial for canaries,
especially during the breeding and moulting seasons, or when a bird is
run-down as a result of soft moult. Meal worms are the larvae of the
small grain moths such as are prevalent in any cereal product, and which
you sometimes find in bird seed. Meal worms can often be raised as a
profitable side line and sold to pet shops.