World distribution map
Paridae (chickadees and titmice)
In the spring, these vocalizations are often used to attract a mate.
Like most birds, females have one ovary to reduce their weight for flight. Chickadees have an average clutch size of 6.8 with 92% hatching success. Baeolophus bicolor can have a clutch of between 3-9 eggs with an incubation period of 12-14 days.
In a mating pair of individuals in the family Paridae, both the male and the female provide food for nestlings. Clutch size among species of Paridae birds can differ quite greatly. The Great Tit can lay its weight in eggs while blue tits have remarkably smaller clutch sizes.
Chickadees and Tits are cavity nesters. These birds lay eggs in March. They use small twigs for their nests. Chickadees from Genus Poecile spend the winter in groups.Genus Cyanistes prefers sycamore, birch and oak trees for nesting.