Question · Biology

What Eats Ravens? Raven Predators Explained

[science] Adult ravens have few natural predators — their large size, intelligence, and mobbing behaviour protect them. The main threats are large raptors (Golden Eagles, Gyrfalcons, Great Horned Owls) and mammalian predators at the nest. Eggs and nestlings are more vulnerable than adults, and young ravens in their first year face the highest mortality of their lives.

Raptors — the Main Avian Predators

[science] Large birds of prey are the most significant avian predators of ravens. The Birds of the World account for Common Raven documents the following:¹

Golden Eagle (Aquila chrysaetos): documented killing adult Common Ravens, particularly in open country where ravens cannot easily escape or recruit help. Ravens mob Golden Eagles vigorously, but a large eagle can overpower an adult raven.
Gyrfalcon (Falco rusticolus): in Arctic and sub-Arctic environments, the Gyrfalcon is a confirmed raven predator. Raven remains have been found in Gyrfalcon nests.
Great Horned Owl (Bubo virginianus) and Eagle Owl (Bubo bubo): large owls can take roosting ravens at night when the birds cannot respond to threats. Great Horned Owls in North America are cited as a raven predator in several studies.
Red-tailed Hawk (Buteo jamaicensis) and other Buteos: occasionally attack juvenile or weakened ravens, but adult Common Ravens are typically too large and aggressive for most buteos.

Nest Predators

[science] The nest — typically on a cliff ledge or in a large tree — is the most vulnerable point in the raven's life cycle. Known nest predators include:¹²

Martens and Wolverines: in boreal forests, pine marten (Martes martes) and wolverine (Gulo gulo) can reach tree nests and consume eggs or chicks. Cliff nests are more secure.
Red Fox and other canids: can reach accessible ground-level or low-tree nests, though cliff-nesting ravens are largely safe from foxes.
American Black Bear and Brown Bear: bears are powerful nest predators capable of reaching cliff-ledge nests in some situations and tree nests routinely.
Other corvids: Ravens vigorously defend their nests from other corvids. Crows and other ravens may raid unguarded nests.

Why Adults Are Rarely Taken

[science] Adult raven annual survival rates in studied populations range from 72–87%, meaning most adults survive each year. Several factors explain their relative safety:¹

Size: at 0.7–1.6 kg with a heavy bill, an adult Common Raven is a formidable bird. Few predators can subdue a healthy adult.
Intelligence and vigilance: ravens are observant and respond rapidly to threats. They maintain sentinels when foraging in groups.
Mobbing: ravens will collectively mob raptors and even drive them from territories — behaviour documented in many field studies.
Habitat selection: cliff nesting, roost site selection, and avoidance of open ground reduce exposure to ambush predators.

First-Year Mortality

[science] The most dangerous period of a raven's life is the first year. Estimates of first-year survival in Common Ravens range from about 20–50% depending on population and habitat. This high mortality is not primarily from predation but from starvation, accidents, and disease — young ravens lack the food-finding skills of adults and must compete with them in non-breeding flocks.¹

Human-Caused Mortality

Beyond traditional persecution (now illegal in most countries), the main human-related mortality factors for ravens today are: illegal shooting and poisoning (still documented in UK upland game estates), vehicle collisions (ravens often feed on road-killed animals), power-line electrocution, and secondary poisoning from lead shot and rodenticide-contaminated prey. These are not predation in the ecological sense, but they are significant mortality sources in some populations.

Frequently Asked Questions

Are ravens afraid of eagles?

Ravens show pronounced alarm responses to large raptors including eagles, but they also mob them aggressively. Ravens have been documented driving off Golden Eagles and even riding on the backs of flying eagles in what may be play or displacement behaviour. The relationship is one of mutual wariness rather than simple predator–prey.

Do ravens have any defence against predators?

Yes. Ravens' primary defences are vigilance, group mobbing, and their own intelligence. They are alert birds that give alarm calls and recruit other ravens to mob potential threats. Nesting on inaccessible cliff ledges is a structural defence. Adults' large size, strong bill, and aggressive behaviour deter most would-be predators.

Do humans predate ravens?

Historically, ravens were killed in large numbers across Europe and North America — shot, poisoned, and trapped — because of perceived threats to livestock and game. Legal protection has reversed this in most countries (UK Wildlife and Countryside Act 1981, US MBTA 1918), and illegal persecution still occurs but is now the main human-related mortality factor rather than systematic killing.

Sources

Boarman, W.I. & Heinrich, B. (1999). Common Raven (Corvus corax). In Birds of the World (A.F. Poole, ed.). Cornell Lab of Ornithology. — survival rates, predator list.
Marzluff, J.M. & Angell, T. (2005). In the Company of Crows and Ravens. Yale University Press. — nest predation, human-raven conflicts.

[science] peer-reviewed study or field-guide data