Eleonora's Falcon: where and when to see them

Eleonora's falcon is a slender, long-winged raptor that breeds mainly on Mediterranean islands and coastal cliffs. Its unusually late breeding schedule allows growing chicks to be fed with small birds migrating south in late summer and autumn. Adults occur in pale and dark plumage forms. After breeding, most migrate toward Madagascar and surrounding regions. Although globally assessed as Least Concern, colonies remain vulnerable to disturbance, introduced predators and changes in food availability.

Size

36-42 cm long; wingspan 87-104 cm

Weight

350-460 g

Lifespan

Not reliably established

Status

Least Concern

These falcons often nest in loose colonies on rocky islands, using ledges, cavities or sheltered ground among rocks. Before the main chick-rearing period, they spend considerable time catching insects, sometimes far from the colony. Later, adults intercept migrating birds over the sea and carry prey back to their young. Flight is agile and buoyant, with rapid turns during pursuit. Wind conditions can strongly influence hunting success and how conspicuous birds are from coastal viewpoints. Courtship displays, including aerial acrobatics and calling, can be observed around breeding sites in spring. These communal nesters often forage together, forming large hunting parties to intercept migrating birds. Their hunting strategy involves flying out over the sea, sometimes several kilometers from shore, to capture tired passerines during their trans-Mediterranean journey.

• Both pale and dark adults occur within the same species.
• Its breeding season coincides with autumn songbird migration.
• The species is named for Eleonora of Arborea, a medieval Sardinian ruler.
• Tracking has revealed migration routes that can cross mainland Africa rather than simply follow coasts.

May through October broadly covers Mediterranean presence, with coastal activity often especially conspicuous in late summer and early autumn. Breeding is later than in many European falcons. Observation should rely on distant public viewpoints or passing decks, not entry into nesting colonies. Prime viewing opportunities occur in late summer and early autumn when adults are actively hunting migratory birds to feed their young. These falcons are long-distance migrants themselves, wintering primarily in Madagascar and eastern Africa after their breeding season in the Mediterranean. Early morning or late afternoon often provide the best light for observation and increased activity near colonies.

Breeding habitat consists chiefly of quiet sea cliffs, rocky islets and offshore islands with protected nesting recesses. Feeding areas extend over adjacent seas and sometimes inland over insect-rich landscapes. Many colonies occupy inaccessible or seasonally restricted terrain unsuitable for visitor landings. The majority of the global population breeds on Aegean islands, with significant concentrations also found along the coasts of North Africa and other Mediterranean nations. Nest sites are typically chosen on sheer cliffs providing protection from predators and good access to hunting grounds. While many colonies are coastal, some smaller groups can be found on inland rock faces or canyons in close proximity to the sea.

Large flying insects are important outside the main chick-rearing period. During late summer and autumn, migrating songbirds become major prey at breeding colonies. The balance varies with season, weather and location, reflecting a hunting strategy closely tied to temporary concentrations of food. Prey delivered to chicks consists almost exclusively of small passerine birds, making it one of the few raptors to specialize in migratory songbirds. Falcons often store surplus insects or small birds at the colony for later consumption, especially during periods of high abundance. They exhibit a unique breeding strategy timed to coincide with the peak autumn migration of passerines across the Mediterranean.

Common name

Eleonora's Falcon

Scientific name

Falco eleonorae

Animal group

Birds

Size

36-42 cm long; wingspan 87-104 cm

Weight

350-460 g

Lifespan

Not reliably established

Status

Least Concern

Identification

Long narrow wings, a notably long tail and pale or wholly dark plumage distinguish it from the stockier peregrine, while pale birds lack the hobby's prominent red trousers. Two distinct morphs exist: a dark morph that is uniformly sooty brown or black, and a more common pale morph with dark upperparts and lighter, streaked underparts. The flight silhouette is slender and elegant, characterized by pointed wingtips that often appear to be angled slightly backwards. Juveniles often show more distinct streaking on the breast and belly compared to adults, and can be distinguished by their paler cere and legs.