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Bonelli's Eagle

Aquila fasciata

iNaturalist eBird Wikipedia

Master of the rocky crags and the high-speed ambush, Bonelli's Eagle is a stunning raptor of the Old World. With its piercing gaze and streaked white plumage, it represents the wild spirit of the Mediterranean hills.

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Quick Identification

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Size

Length: 55-74 cm (22-29 in); Wingspan: 143-163 cm (56-64 in); Weight: 1.4-2.5 kg (3.1-5.5 lbs)

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Colors

Adults feature dark chocolate-brown upperparts and creamy white underparts with fine dark vertical streaks. They are famous for a distinct white 'V' or patch on the mantle (upper back).

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Key Features

Pale underparts with dark vertical streaking
Prominent white patch on the upper back (adults)
Long, squared tail with a wide black terminal band
Feathered legs reaching down to the yellow talons

When You’ll See Them

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Activity pattern Active during the day

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Peak hours 8-11 AM, 3-6 PM

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Season Year-round

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Diet A versatile hunter focusing on medium-sized mammals like rabbits and hares, and various birds such as pigeons, partridges, and crows.

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Habitat Hilly or mountainous terrain with rocky cliffs for nesting, often surrounded by open scrubland, maquis, or Mediterranean woodland.

Behavior

Bonelli's Eagle is a formidable and agile predator, often referred to as the 'sprinter' of the eagle world due to its incredible speed during low-altitude hunts. Unlike many larger eagles that rely on soaring at great heights, this species often hunts from cover or through high-speed contour flying, weaving through trees and rocky outcrops to ambush its prey. It is highly territorial and typically lives in pairs that remain together throughout the year, often using the same nesting site for decades.

While generally shy and inclined to avoid human-heavy environments, they are a hallmark species of Mediterranean-style landscapes and traditional agricultural zones. They are mostly silent birds, though they engage in spectacular aerial displays during the breeding season. These 'sky dances' involve breathtaking dives and upward swoops, serving as a clear signal to other eagles to keep their distance from the pair's established territory.

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Camera Tips

To capture a Bonelli's Eagle on a trail camera, focus on high-vantage points. If your property has a rocky ridge or a tall, isolated tree overlooking an open field, these are prime spots. Place the camera 6-10 feet high on a sturdy branch or pole, angled slightly downward. These eagles often use specific 'lookout' perches to scan for movement below, and finding one of these favored spots is the key to getting a high-quality close-up.

Because these raptors are exceptionally wary of human presence and new objects, use a camera with a camouflaged housing and ensure it is positioned so it doesn't catch direct sunlight, which can cause lens flare and alert the bird to the glass surface. Cellular cameras are ideal here, as they allow you to monitor the feed without visiting the site and leaving human scent or disturbing the area frequently.

While they don't visit traditional bird feeders, a large, ground-level water feature like a stone basin or a small pond in a quiet area can be a major draw, especially in arid climates during the summer months. Set your camera to 'Burst Mode' or a very short trigger interval. A Bonelli's Eagle landing or taking off happens in a split second, and you’ll want a sequence of shots to ensure you capture the magnificent wing spread and the white patch on the back.

Similar Species

Species that look similar or are commonly confused with Bonelli's Eagle.

Golden Eagle

Much larger and darker overall; lacks the white underparts and the white patch on the upper back.

Booted Eagle

Smaller with a more varied color palette; the pale-phase Booted Eagle has whiter, unstreaked underparts compared to Bonelli's.

Short-toed Snake Eagle

Has a larger, more rounded 'owl-like' head, yellow eyes, and lacks the feathered legs (boots) of the Bonelli's.

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Frequently Asked Questions

Bonelli's Eagles are diurnal, meaning they are active during daylight hours. They are most frequently seen hunting in the mid-morning after the air warms enough to provide thermals for easy soaring, and again in the late afternoon before they return to their cliffside roosts.

These eagles are unlikely to visit standard feeders. To encourage them, focus on providing a large, safe water source and maintaining a natural landscape that supports their prey, such as wild rabbits or pigeons. They are most likely to visit properties that border hilly, undeveloped scrubland.

Their diet is primarily composed of medium-sized mammals and birds. Favorite prey items include wild rabbits, hares, pigeons, doves, and occasionally larger reptiles like lizards if mammal or bird prey is scarce.

They are generally shy of dense human development and prefer remote, rocky terrain. However, they can sometimes be seen on the 'urban-wildlife interface' where suburban gardens meet large tracts of open hill country or traditional farmland.

Bonelli's Eagles are smaller and have significantly whiter underparts with dark streaks, whereas Golden Eagles are much darker overall. Additionally, adult Bonelli's Eagles have a distinctive white patch on their upper back that Golden Eagles lack.

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