A small bird with a blue crown and yellow underside, found from woodland to parks and gardens.
It has a blue crown, a white face marked with black, blue wings and tail, and a yellow underside.
Blue Tits breeding in southern Spain’s Mediterranean woodland vary in breeding output among forest types. Egg laying began earliest in Pyrenean oak forest. Clutch size and fledgling numbers were highest in humid Pyrenean oak where tree cover was greatest, and lowest in Scots pine forest.
Across four forest types, the share of nests with any hatching or fledging was similar, as were adult and chick body sizes. Most ectoparasites did not affect reproduction, although Culicoides was linked with lower chick body mass. Adults that raised more fledglings had lower body mass, and males whose females laid larger clutches had shorter tarsi.
An extinction-risk assessment has not been added yet.
In southern Spain, Blue Tits had larger clutches and more fledglings in humid oak forest with dense tree cover. Retaining woodland structure that supports these breeding conditions can aid local conservation.