Blue Tit

The Blue Tit, Cyanistes caeruleus, is a 10.5 to 12 cm (4.2 to 4.8 inches,) long passerine bird.
The azure blue crown and dark blue line passing through the eye and encircling the white cheeks to the chin give the Blue Tit a very distinctive appearance. The forehead and a bar on the wing are white. The nape, wings and tail are blue; the back is yellowish green; the under parts mostly sulphur-yellow with a dark line down the abdomen. The bill is black, the legs bluish grey, and the irides dark brown. Young Blue Tits are noticeably more yellow. This is a common and popular European garden bird, due to its perky acrobatic performances when feeding on nuts or suet. It swings beneath the holder, calling tee, tee, tee or a scolding churr.

The song period lasts almost all the year round, but is most often heard during February to June.
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