This acrobatic, gravity defying bird is often mistaken for a woodpecker. Its powerful toes help it to climb under and down branches. It is commonly found in older deciduous woodland and in some large parks and gardens with old trees. Its diet consists of nuts, seeds, and insects.
It nests in a hole in a tree or wall, or will take over an abandoned nest. The hole may be reduced in size by plastering it with mud in order to keep out larger birds.
Breeding starts in April and usually has 1-2 clutches a year.