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

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

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.

Luke Massey / Spanish imperial eagle (Aquila adalberti), Extremadura, Spain October.

Luke Massey / Spanish imperial eagle (Aquila adalberti), Extremadura, Spain October.

Luke Massey / Spanish imperial eagle (Aquila adalberti), Extremadura, Spain October.

Roland Seitre / Spanish Imperial Eagle (Aquila adalberti) chick stretching wings at nest in pine tree, near Jaen, Andujar, Sierra Morena, Andalucia, Spain.

Roland Seitre / Spanish Imperial Eagle (Aquila adalberti) chick stretching wings at nest, near Jaen, Andujar, Sierra Morena, Spain.

Roland Seitre / Spanish Imperial Eagle (Aquila adalberti) chick stretching wings at nest, near Jaen, Andujar, Sierra Morena, Spain.

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