The Black-capped Chickadee is a frequent visitor to bird feeders.
They can remember where they hide food for at least a month after putting it in its hiding place.
To keep warm the chickadee erects its soft, thick feathers to trap warm air close to its body. This serves as good insulation against the cold.
When breeding season begins, the tiny brains of chickadees and other songbirds enlarge to enable the birds to create more sounds.
Chickadees live in small groups and establish a dominance hierarchy, or "pecking order." Each bird is known to the other according to rank which is set by its degree of aggressiveness. Accordingly, all the birds in the flock are subordinate to the most aggressive bird; and the lowest ranking bird is subordinate to all the others.