Corvus frugilegus
The Rook, *Corvus frugilegus*, is a highly social and intelligent member of the crow family, Corvidae, closely related to other species within the *Corvus* genus. Adult Rooks are distinctive among corvids by their bare, whitish patch of skin at the base of the pale, slender bill, which contrasts sharply with the black, glossy plumage. Measuring approximately 45-47 cm (17.7-18.5 in) in length with a wingspan of 81-99 cm (32-39 in) and weighing 350-550 g (12.3-19.4 oz), they possess iridescent ...
Rooks primarily inhabit open agricultural land, grasslands, pastures, and parklands, often adjacent to woodlands or tree groves for nesting. They thrive in cultivated areas at low to moderate elevations.
Their diet primarily consists of invertebrates, particularly earthworms, grubs, and insect larvae, supplemented by cereals, seeds, fruit, and occasionally small vertebrates or carrion. They predominantly forage by probing soft ground with their bill.
Rooks are highly gregarious birds, active during the day and famous for forming vast communal roosts, sometimes numbering tens of thousands, especially outside the breeding season. Their foraging strategy involves extensive ground gleaning and probing with their long, slender bills to extract sub...
The Rook has an extensive Palearctic range, breeding across temperate Eurasia from Western Europe (including the UK and Ireland) eastward through Central Asia and Siberia to Eastern Asia, including Mongolia, China, Korea, and Japan. Northern populations are partially migratory, undertaking signif...
Least Concern
- Adult Rooks are unique among European corvids for their bare, whitish facial patch around the bill, which develops after their first year. Juveniles have feathered faces, often causing confusion with Carrion Crows. - Rooks are incredibly intelligent, capable of solving complex problems and even...