The Eurasian Blue Tit Royalty-Free Stock Photography

The Eurasian blue tit is usually 12 cm 4.7 in, long with a wingspan of 18 cm 7.1 in for both sexes, and weighs about 11 g 0.39 oz.A typical Eurasian blue tit has an azure-blue crown and dark blue line passing through the eye, and encircling the white cheeks to the chin, giving the bird a very distinctive appearance. The forehead and a bar on the wing are white. The nape, wings and tail are blue and the back is yellowish green. The underparts is mostly sulphur-yellow with a dark line down the abdomen—the yellowness is indicative of the number of yellowy-green caterpillars eaten, due to high levels of carotene pigments in the diet.