Common Raven — Identification

Measurements

Source: Madge & Burn (1994).¹

Key Field Marks

1. Tail Shape — the Most Reliable Mark

[science] The Common Raven's tail is wedge-shaped or diamond-shaped in flight — the central tail feathers are longer than the outer ones, creating a pointed or wedge profile. This contrasts directly with the fan-shaped or rounded tail of Carrion Crow, Rook, and Jackdaw. The wedge tail is visible at considerable distance and is the fastest single identification mark.¹

2. Size

[science] At 56–69 cm and 689–1,625 g, the Common Raven is roughly twice the weight of a Carrion Crow (370–650 g) and comparable in size to a Common Buzzard. When directly compared with a crow, the size difference is obvious. At distance without a size reference, the proportions — heavy-bodied, large-headed, long-tailed — still read "big" compared to other corvids.

3. Bill

[science] The raven's bill is heavy, arched, and deep at the base — substantially larger than a crow's bill and with a pronounced curve from culmen to tip. The nasal bristles (feathers at the base of the bill) are long and project forward, adding to the distinctive facial profile visible at close range.¹

4. Throat Hackles

[science] At close range, the raven's throat shows shaggy, lanceolate (pointed) hackle feathers that hang loosely and can be erected. These are unique to ravens among British corvids — Carrion Crow, Rook, Jackdaw, and Hooded Crow all have smooth throat feathers. In aerial display and vocalisation, the hackles are particularly visible.¹

5. Plumage

[science] Entirely black, with a blue-green iridescent gloss visible in good light. Fresh plumage (autumn) shows stronger iridescence; worn summer plumage appears browner-black. No white, grey, or pale markings at any age.

6. Voice

[science] The standard call is a deep, hollow "kronk" or "pruuk" — a resonant croak clearly distinct from the caws and kaah calls of other corvids. The call carries well and can identify a raven at considerable distance before the bird is seen. The vocal repertoire is much wider (see: Raven Vocalisation) but the basic croak is diagnostic.²

7. Flight

[science] Ravens soar extensively on flat, slightly bowed wings — unlike the more direct flapping flight of Carrion Crows. In good conditions they ride thermals and updrafts for extended periods. They frequently engage in aerial play — rolling, tumbling, chasing in pairs or groups. This playing, soaring flight over upland habitat is a highly reliable field indicator. Crows do not play aerially in this way.²

Confusion Species

• Raven vs Crow — full guide (tail, size, bill, voice, hackles, flight, habitat)
• Raven vs Carrion Crow (UK-specific)
• Raven vs Rook (pale face, colonial nesting)
• Raven vs Jackdaw (much smaller; pale eye; grey nape)
• Raven vs Hooded Crow (grey body — not an all-black bird)