Golden Eagle food-web & ecology

Golden Eagles have one of the most diverse diets of any bird of prey, with over 400 prey species recorded across their range. Across Europe, their diet is typically dominated by mammals (50–60%), particularly rabbits and hares, alongside birds (15–25%) such as corvids, pigeons and upland species. Carrion can also form a significant component (often 10–20%), though this is frequently underestimated. Smaller proportions of other prey (5–10%), including reptiles and amphibians, may also be taken opportunistically.

Most prey are small to medium-sized (typically 0.5–1.6 kg), with larger prey taken only occasionally and usually involving vulnerable individuals. Despite their size, Golden Eagles require relatively little food (around 230 g per day), feeding opportunistically and often alternating between periods of fasting and larger meals. They are highly energy-efficient predators, relying on soaring flight and selective hunting to minimise energy use.

Prey selection is largely driven by availability, with Golden Eagles typically targeting the most abundant and accessible species. As a result, predation pressure is distributed across multiple species rather than concentrated on any one population, while carrion use contributes to nutrient recycling within upland ecosystems. This flexibility allows Golden Eagles to respond to local and seasonal conditions, supporting balanced and resilient upland food webs.

 
 

How do Golden Eagles interact with wildlife?

Golden Eagles occupy an important role within upland ecosystems as both top predators and scavengers. While they are sometimes perceived negatively, their ecological role is natural and contributes to healthy ecosystem function. They interact with wildlife through a combination of predation, scavenging and influences on mesopredators. Together, these processes help regulate food webs, recycle nutrients, and support balanced, functioning upland ecosystems.

 

Predation

Regulating populations of common prey species, particularly small to medium-sized mammals and birds.

Scavenging

Removing carrion from upland environments, supporting nutrient cycling and interacting with other scavengers such as ravens, red kites and foxes, helping to recycle energy and maintain functioning terrestrial ecosystems.

Mesopredator regulation

Influencing the behaviour and abundance of smaller predators (e.g. foxes and corvids), which can help shape wider food web dynamics.

 

What would Golden Eagles eat in Wales?

In Wales, Golden Eagles would most likely feed on abundant and accessible prey, reflecting patterns seen across Europe. Their diet would be diverse and opportunistic, centred on what is most available within the landscape. This would likely include rabbits and brown hares, corvids such as crows and ravens, pigeons and other medium-sized birds, and a range of upland bird species. Carrion, particularly from sheep and deer, would also form an important component, with occasional opportunistic prey such as fox cubs, and rarely other small mammal young, potentially including badger cubs.

Unlike parts of Scotland, Wales lacks consistent densities of grouse and mountain hare. As a result, Golden Eagles would rely on a broader and more flexible prey base, responding to local availability and seasonal conditions.

Would Golden Eagles affect protected species?

Golden Eagles may occasionally take a range of wild prey, including some protected or conservation-sensitive species such as upland birds. However, across Europe, there is no evidence that Golden Eagles cause population-level declines in these species. In Wales, many upland birds are already under pressure from habitat loss and high numbers of mesopredators such as foxes and crows. Golden Eagles are opportunistic predators, taking what is most available, with their diet spread across many species rather than focused on any one.

They spend much of their time perched (around 70%), and when in flight, typically move through the landscape using high, energy-efficient soaring. Active hunting forms only a small part of their daily behaviour, with attempts infrequent, brief, and often unsuccessful (around 10–20% success). As a result, both predation pressure and disturbance to upland birds are low, typically brief and localised rather than repeated in the same areas. As a top predator, Golden Eagles may also help to influence ecosystem balance, including interactions with mesopredators, contributing to more resilient upland systems over time.

A future food web informed by ecology

Golden Eagles were once part of Welsh ecosystems, and the ecological processes they represent are currently incomplete. Understanding how they feed and interact with wildlife helps move the conversation from perception to evidence. Available data suggest they would function as flexible, opportunistic predators, relying mainly on common prey and carrion. Restoring this ecological role is not about introducing something new, but about reinstating a missing component of the natural food web, grounded in ecological reality.