tit

small projection in which the mammary ducts of either sex of mammals terminate and from which in females milk is secreted for the young

Titmice (or simply Tits), are referred to in Northern America as Chickadees as well. In summer they fly about rather unnoticed but as soon as winter comes you will see them virtually everywhere. A number of species can become really tame. Tits are intelligent birds that over the years adapted themselves to the changing environment. For instance they learned how to open milk bottles to get to the tasty cream on top of the milk. Most Titmice are resident birds that don't migrate at all or if they do its over short distances only. The best known Tit is perhaps the Great Tit. Like most Tits this is a hole nesting bird. It often competes with the Blue Tit over the ownership of a good nesting hole. And because the Great Tit is just a tiny bit bigger (and stronger) it usually triumphs. All titmice eat insects, spiders and larvae in spring and summer, but switch to berries and nuts once winter approaches.