The sombre tit (''Poecile lugubris'') is a member of the tit family found in southeast

Europe Europe is a large peninsula conventionally considered a continent in its own right because of its great physical size and the weight of its history and traditions. Europe is also considered a subcontinent of Eurasia and it is located enti ...

and southwest

Asia Asia (, ) is one of the world's most notable geographical regions, which is either considered a continent in its own right or a subcontinent of Eurasia, which shares the continental landmass of Afro-Eurasia with Africa. Asia covers an ...

. Sombre tits occur in low density in thin woodlands at the elevation range between 1000 and 1600 metres above sea level. Similar to the other tit species, the sombre tit is a cavity-nesting species, which makes the nests in the holes in juniper, willow, poplar, and other relevant tree species. In some cases they nest in iron pipes (e.g. the ones used for orchard fencing), and in artificial nest-boxes. The clutch usually consists on 4 to 9 eggs, having two clutches per year. The species appear to be resident in the country with slight local movements. They breed on mountain slopes and in open deciduous forest; lower down on in trees and bushes in rocky terrain, as well as in fruit orchards. The breeding season lasts from early April till end of July - beginning of August. The food mainly consists on insects.

Molecular phylogenetic Molecular phylogenetics () is the branch of phylogeny that analyzes genetic, hereditary molecular differences, predominantly in DNA sequences, to gain information on an organism's evolutionary relationships. From these analyses, it is possible to ...

studies have shown that the sombre tit is

sister A sister is a woman or a girl who shares one or more parents with another individual; a female sibling. The male counterpart is a brother. Although the term typically refers to a familial relationship, it is sometimes used endearingly to refer to ...

to the white-browed tit (''Poecile superciliosus'').

References

sombre tit Birds of Europe Birds of Azerbaijan Birds of Western Asia sombre tit {{Paridae-stub