© Photo by Terry Whittaker/2020VISION Rook Corvus frugilegus © Photo by Terry Whittaker/2020VISION Key FactsLength: 45cmWingspan: 90cmWeight: 310gAverage lifespan: 6 years The all-black rook is a sociable bird, so can be spotted in flocks or nesting colonies, known as ‘rookeries’. The male courts the female with a display of strutting, bowing and cawing, and between three and five eggs are laid after mating. Rooks are omnivorous and feed on insects, earthworms, seeds and root crops, sometimes caching their food for later. How to Identify The rook can be distinguished from the similar carrion crow by its pale bill and bare, grey bill-base, and the ‘baggy trousers’ of feathers around its legs. Where to Find The rook is a large crow that makes a big nest out of twigs in the top of trees. They often nest in villages and graveyards, but are also birds of farmland and grassland. How People Can Help To help populations of all our birds, The Wildlife Trusts are working towards a ‘Living Landscape’: a network of habitats and wildlife corridors across town and country, which are good for both wildlife and people. You can support this greener vision for the future by joining your local Wildlife Trust. Did you know? A group of rooks together is known as a parliament. Similar Species Barn Owl Birds Black-Headed Gull Birds Blackbird Birds Blackcap Birds Blue Tit Birds Bullfinch Birds Buzzard Birds Canada Goose Birds Carrion Crow Birds Chaffinch Birds Chiffchaff Birds Coal Tit Birds Collared Dove Birds Coot Birds Curlew Birds Dipper Birds Dunnock Birds Fieldfare Birds Goldcrest Birds Golden Plover Birds Goldfinch Birds Great Spotted Woodpecker Birds Great Tit Birds Greenfinch Birds Grey Heron Birds Grey Wagtail Birds Hen Harrier Birds Herring Gull Birds House Sparrow Birds Jackdaw Birds Jay Birds Kestrel Birds Kingfisher Birds Lapwing Birds Linnet Birds Little Egret Birds Little Grebe Birds Long-Tailed Tit Birds Magpie Birds Mallard Birds Mandarin Duck Birds Meadow Pipit Birds Mistle Thrush Birds Moorhen Birds Nightjar Birds Nuthatch Birds Peregrine falcon Birds Redwing Birds Robin Birds Siskin Birds Skylark Birds Snipe Birds Song Thrush Birds Sparrowhawk Birds Starling Birds Swallow Birds Swift Birds Tawny owl Birds Tree Sparrow Birds Treecreeper Birds Waxwing Birds Wheatear Birds Whitethroat Birds Willow Warbler Birds Wood Pigeon Birds Wood Warbler Birds Wren Birds