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128 Bonelli’s Eagle

Javier Blasco-Zumeta & Gerd-Michael Heinze Ibercaja Aula en Red

http://aulaenred.ibercaja.es

SEXING

Both sexes with similar plumage, although

adult male is on average whiter and more finely

streaked below than female of similar age.

Juveniles and adults can be sexed by size in

extreme birds: male with wing shorter than 468

mm. Female with wing longer than 510 mm.

Bonelli’s Eagle.

Ageing. Pattern

of head: top

adult; bottom

juvenile.

Bonelli’s Eagle. Ageing. Pattern of upperparts: left

adult; right juvenile.

Bonelli’s Eagle. Ageing. Pattern of breast: left adult;

right juvenile.

Bonelli’s

E a g l e .

Ageing.

Pattern of

u n d e r

w i n g

coverts:

top adult;

b o t t o m

juvenile.

Bonelli’s Eagle. Ageing. Pattern of underside of

secondaries: left adult; right juvenile.

B o n e ll i ’s

E a g l e .

A g e i n g .

Pattern of

central tail

feather: left

adult; right

juvenile.

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Eagle 128 Bedienungsanleitung Seite 2