Wednesday, July 6, 2016



Hi!  my question is……why do the Chickadees in my garden go to a stone wall with a ledge, land and then spread their wings toward the sun??  This seems to be a group activity.  Thank you for your help!


Right now a group of baby birds with new plumage and in late summer adult birds that are growing new outer feathers, often sun themselves. Like ironing our clothes, the heat of the sun might help make it easier for birds to shape their new feathers. And along with easing discomfort associated with molting, the sun may also help dislodge parasites so the bird can preen them off more easily.

Some ways birds maintain feather quality is through water, dust, and sun bathing. Instinct to sunbathe is not always to warm the body. Like humans they probably enjoy a few rays but their main reasons for sunning is probably to keep their feathers in top shape.
 

Most birds have a preen gland or uropygial gland at the base of the tail. With their beak, birds realign the barbs correctly, remove any dirt or parasites and apply preen oil. If the bird sunbathes the oil is exposed to the ultraviolet light from the sun. Then the uropygial gland secretions convert to an active form of vitamin D which is ingested with the next preening. This may explain in part why some birds sunbathe.
 

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