Bonelli's Eagle

Bonelli's Eagle is a powerful, agile raptor of rocky and mountainous terrain across the Mediterranean region and into southern and southeastern Asia, known for fast, direct hunting flights close to terrain and cliffs.

Adult Bonelli's Eagle underparts are whitish, marked with fine dark shaft-streaks rather than heavy barring, giving a paler overall look on the body than many other similarly sized eagles in its range. The tail feathers are pale grey-brown crossed with numerous fine dark bars and finished with a bold, solid blackish terminal band, a useful identification feature when the tail is spread. A small whitish patch is often visible on the upper mantle/back in adults. Flight feathers are dark brown above and show fine barring below, with a moderately long, parallel-edged shape typical of Aquila-type eagles.

Juveniles are rufous-buff below without the fine streaking of adults, appearing warmer toned overall, and gradually acquire adult-type plumage over about four to five years. Sexes look alike, with females larger. Adults undergo a slow, sequential molt of flight feathers.

Bonelli's Eagle favors rocky, mountainous, and hilly terrain with cliffs for nesting, often adjacent to Mediterranean scrub or open woodland used for hunting. The species ranges from southern Europe and North Africa through the Middle East to South and Southeast Asia, generally remaining resident on established territories.

This species is a fast, powerful hunter, taking birds and mammals in swift, low pursuit flights close to terrain, often working in pairs to flush and capture prey. Nests are built on cliff ledges or occasionally in large trees. Populations have declined in parts of Europe due to habitat loss and human disturbance.