Original: The Blue Tit, Cyanistes caeruleus, is a 10.5 to 12 cm (4.2 to 4.8 inches,) long passerine bird in the tit family Paridae.
Simplified: The Blue Tit, Cyanistes caeruleus, is a passerine songbird in the family Paridae. It is 10.5 to 12 cm (4.2 to 4.8 inches) long.