Rook

The Rook is a highly social corvid of open farmland, famous for nesting colonially in noisy treetop 'rookeries'. Adults have distinctive bare, greyish-white skin at the base of the bill, giving the face a peaked, almost gaunt look compared to other black corvids.

Rooks are widespread residents across much of Europe and into temperate Asia, closely tied to agricultural landscapes where they probe pasture and plowed fields for soil invertebrates.

A Rook's feathers are essentially indistinguishable in isolation from those of a Carrion Crow in terms of basic color, but the species' loose, almost baggy thigh feathering and slightly more pointed flight feathers can offer subtle clues alongside habitat context.

Overall color

• Entirely black with a strong glossy purple-blue iridescence, very similar to Carrion Crow feathers.

Shape clues

• Flight feathers tend to be slightly more pointed and narrower than a Carrion Crow's, reflecting the Rook's more buoyant flight style.
• Thigh (leg) feathers are notably loose and shaggy in life, giving a 'baggy trousers' look; these feathers can appear looser-barbed than a crow's tighter thigh feathering.

Distinguishing from Carrion Crow

• Because the two species' feathers are very similar in color, context (farmland with a colonial rookery nearby) is often the best clue; feather shape alone is not always reliable.

Confusion species

Carrion Crow and Hooded Crow feathers are the closest matches; both are all black or partly black, so location and any facial or thigh feather clues should be used alongside color for a confident call.

Adult Rooks are entirely black with a glossy purplish-blue sheen, and have a distinctive area of bare, greyish-white skin at the base of the bill that gives the face a peaked profile. The thigh feathers are notably loose and shaggy, resembling ruffled trousers.

Males and females look alike. Juveniles lack the bare facial skin, instead having a fully feathered face similar to a crow's, and can be confused with Carrion Crows until the bare patch develops with age.

Rooks undergo a complete molt after the breeding season, typically in mid- to late summer.

Rooks are birds of open farmland and pasture, feeding extensively on soil invertebrates by probing with their long bills. They nest colonially in tall trees, often in the same rookeries used for many years.

The species is resident across much of Europe and extends into temperate Asia, with some northern populations moving short distances south in winter.

Rooks feed mainly on soil invertebrates such as worms and grubs, probing pasture and plowed fields with their bills, alongside grain and other plant material. They are highly social, nesting and roosting communally, often alongside Jackdaws.

Their call is a harsh, cawing 'kaah', generally flatter and less resonant than a crow's call. Nests are large stick platforms built high in trees within a shared rookery.

Since Rook and Carrion Crow feathers look very similar, finding a black corvid feather near a farmland rookery with visible colonial tree nests is a good contextual clue pointing toward Rook.