Roger Powell / Spanish imperial eagle (Aquila adalberti) perched on a rock and stretching its wings, Castro Verde, Alentejo, Portugal, April.

Juan Carlos Munoz / Close-up of the feathers of a Spanish imperial eagle (Aquila adalberti). Sierra de Andujar Natural Park, Jaen, Andalusia, Spain

Juan Carlos Munoz / Close-up of the talons of a Spanish imperial eagle (Aquila adalberti). Sierra de Andujar Natural Park, Jaen, Andalusia, Spain, Captive

Juan Carlos Munoz / Spanish imperial eagle (Aquila adalberti) stooping to catch a lizard. Sierra de Andujar Natural Park, Jaen, Andalusia, Spain, Captive

Juan Carlos Munoz / Spanish imperial eagle (Aquila adalberti) perching on a rock. Sierra de Andujar Natural Park, Jaen, Andalusia, Spain, Captive

Juan Carlos Munoz / Spanish imperial eagle (Aquila adalberti) in flight. Sierra de Andujar Natural Park, Jaen, Andalusia, Spain, Captive

Juan Carlos Munoz / Spanish imperial eagle (Aquila adalberti) portrait, Spain Captive

Staffan Widstrand / Iberian or Spanish imperial eagle (Aquila adalberti) eating a rabbit put out for it at a wildlife watching hide near El Barraco, Gredos Mountains, Avila, Spain.

Staffan Widstrand / Iberian or Spanish Imperial eagle (Aquila adalberti) eating a rabbit put out for it at a wildlife watching hide near El Barraco, Gredos Mountains, Avila, Spain

Oscar Diez/ BIA / Spanish Imperial Eagle (Aquila adalberti) flying, Andalucia, Spain

David Tipling / Spanish imperial eagle (Aquila adalberti) adult male approx 8 yrs old in Sierra San Pedro, Extremadura, Spain. December

Francisco Marquez / Female Spanish imperial eagle (Aquila adalberti) with two chicks in nest, Castilla La Mancha, Spain, June.