Rook

(Corvus frugilegus)

Category of conservation concern (IUCN, 2020) – Least Concern

Population size: 15 000 – 25 000 pairs

Distribution pattern

With patchy and dispersed distribution in the plains mainly in Northern Bulgaria, more densely in areas in the Danubian Plain, the Sofia Field, the areas along the Tundzha river and in the Karnobat Plain. The southernmost colonies are in Sakar, along the Maritsa River and along the Struma River. Breeds mainly in settlements, and if undisturbed may occupy the same sites for years.

Comparative distribution of the species compared to the first breeding birds atlas (Iankov, 2007): Breeding locality until 2007 | Breeding locality until 2007, confirmed after 2015 – | New breeding locality after 2015. – The breeding localities after 2015 are identified on a base of raw data from smartbirds.org.

Habitats

Breeds mainly in strips of trees, shrubs and mosaics of them, both outside and in towns, villages and industrial zones, where it often occupies small groves, especially of Robinia pseudoacacia, in public parks and gardens, in tree and shrub plantations (most often of Populus sp.), less often in open broad-leaved deciduous forests.

Trends in population changes for the period 2013-2020

Not analysed

Threats

Not analysed