How to Identify Thick-billed Raven Feathers

What Thick-billed Raven's Feathers Look Like

Thick-billed Raven is the largest corvid in the world, an Ethiopian highland endemic, and its feathers combine deep gloss with a surprising hidden secret.

• Body/contour feathers: entirely glossy black with a purplish-blue to greenish sheen in good light, similar in tone to Common Raven but on a noticeably larger, heavier feather.
• Hidden white patch: uniquely among ravens, Thick-billed Raven has a patch of white feather bases on the nape/hindneck that is normally concealed beneath the black overlying feathers but becomes visible when feathers are parted or ruffled by wind — a strong diagnostic if you can check the feather base color.
• Throat hackles: shaggy, elongated feathers on the throat, similar to Common Raven's beard but on this species notably fuller given the bird's larger size.
• Flight feathers: broad, long, deeply "fingered" primaries typical of ravens, black with the same purple-green gloss as the body.
• Tail feathers: long, wedge-shaped in flight, solid glossy black.
• Size: notably large — contour feathers can run 6-9 cm and primaries up to 30+ cm, exceeding those of Common Raven and most other crows.

Step-by-Step: Is This Feather From a Thick-billed Raven?

1. Check the size first. Feathers noticeably larger than a typical crow or even a Common Raven feather are a strong starting clue given this species' exceptional bulk.
2. Part the feather base if possible. White at the feather base near the nape/neck region, hidden under black tips, is a hallmark of this species not shared by most all-black corvids.
3. Assess the gloss. A rich purplish-blue-green sheen across the black surface fits Thick-billed Raven and other large corvids; dull, matte black suggests a different (often smaller) species.
4. Look at throat feathers. Long, shaggy hackle-like feathers under the chin indicate a raven rather than a crow.
5. Factor in location. Feathers found in Ethiopian or Eritrean highland habitat, especially around 1,500-4,000 m elevation, strongly favor this range-restricted species.

Similar Species & How to Tell Them Apart

• Common Raven: overlaps in range only marginally; lacks the concealed white nape patch and generally has smaller feathers overall.
• Pied Crow: shows an obvious white breast and collar on the actual plumage (not hidden), instantly separating it from the all-black-appearing Thick-billed Raven.
• Cape Rook/other African corvids: smaller-bodied with less shaggy throat feathering and a less pronounced gloss.
• Fan-tailed Raven: much smaller with a distinctly shorter, more rounded tail relative to wing length.

Where & When You'll Find Them

Thick-billed Raven is essentially restricted to the highlands of Ethiopia and Eritrea, favoring high-altitude plateaus, escarpments, and areas near human settlements where it scavenges. It does not undertake long migrations, so feathers can be found year-round within its highland range, with a modest uptick during the post-breeding molt in the months following the rainy season nesting period.