Oscar Diez/ BIA / Bonelli's Eagle (Hieraaetus fasciatus) female feeding on prey, Andalusia, Spain

Oscar Diez/ BIA / Greater Flamingo (Phoenicopterus ruber) flock taking flight, Andalusia, Spain

Oscar Diez/ BIA / Greater Flamingo (Phoenicopterus ruber) trio taking flight from wetland, Andalusia, Spain

Oscar Diez / Pin-tailed Sandgrouse (Pterocles alchata) male, Castile-La Mancha, Spain

Oscar Diez/ BIA / Bonelli's Eagle (Hieraaetus fasciatus) juvenile, Castile-La Mancha, Spain

Oscar Diez/ BIA / Brown Pelican (Pelecanus occidentalis) flying, Escuintla, Guatemala

Oscar Diez/ BIA / Pygmy Cormorant (Microcarbo pygmeus) spreading wings, Danube Delta, Romania

Oscar Diez/ BIA / Pygmy Cormorant (Microcarbo pygmeus), Danube Delta, Romania

Oscar Diez/ BIA / Pygmy Cormorant (Microcarbo pygmeus), Danube Delta, Romania

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

Oscar Diez/ BIA / European Bee-eater (Merops apiaster) regurgetating pellet, Andalucia, Spain

Oscar Diez/ BIA / Western Marsh-Harrier (Circus aeruginosus) female flying, Castile-La Mancha, Spain