Loic Poidevin / Northern ravens (Corvus corax) interacting in snow, Leon, Spain, February.

Loic Poidevin / Eurasian bullfinch (Pyrrhula pyrrhula) male on a branch feeding on Rowan (Sorbus aucuparia) berries, Leon, Spain, February.

Loic Poidevin / Eurasian bullfinch (Pyrrhula pyrrhula) male on a branch feeding on Rowan (Sorbus aucuparia) berries, Leon, Spain, February.

Francisco Marquez / Two male Iberian wild goats (Capra pyrenaica) fighting, Sierra de Gredos, Spain, November.

Brais Seara Fernandez/ BIA / Griffon Vulture (Gyps fulvus), Castile-Leon, Spain

Brais Seara Fernandez/ BIA / Indian Peafowl (Pavo cristatus) female watching male performing courtship display, Castilla Leon, Spain

Juan Carlos Munoz / Close up of horse wearing bridle, Sierra de Gredos, Avila, Castile and Leon, Spain.

Juan Carlos Munoz / Close up of horse wearing bridle, Sierra de Gredos, Avila, Castile and Leon, Spain.

Angelo Gandolfi / Las Medulas, Cordillera Cantabrica, Castilla y Leon, Spain. The landscape, now a natural reserve, is man-made: the rock formations are the result of iron mining since Roman times and the wood is culti...

Angelo Gandolfi / Golden Eagle (Aquila chrysaetos) swooping with folded wings and extended tallons. Canyon del Ebro y Rudron, Castilla y Leon, Spain. Digital composite

Angelo Gandolfi / Flock of Griffon vultures (Gyps fulvus) in flight over carrion. Valle del Agusejo, Castilla y Leon, Spain.

Angelo Gandolfi / Golden Eagle (Aquila chrysaetos) swooping. The sequence of folding wings to gain speed. Canyon del Ebro y Rudron, Castilla y Leon, Spain. COMPOSITE IMAGE.

Angelo Gandolfi / Ucero Castle, Rio Lobos canyon, Castilla y Leon, Spain. April 2006.

Angelo Gandolfi / Golden Eagle (Aquila chrysaetos) swooping with folded wings and extended tallons. Canyon del Ebro y Rudron, Castilla y Leon, Spain. Digital composite

Angelo Gandolfi / Golden Eagle (Aquila chrysaetos) swooping with folded wings to gain speed. Canyon del Ebro y Rudron, Castilla y Leon, Spain. Digital composite

Angelo Gandolfi / Golden Eagle (Aquila chrysaetos) swooping with folded wings and extended tallons. Canyon del Ebro y Rudron, Castilla y Leon, Spain. Digital composite

Angelo Gandolfi / Karstic pools near Orbaneja del Castillo, Canyon del Ebro y Rudron, Castilla y Leon, Spain.

Angelo Gandolfi / Egyptian vulture (Neophron percnopterus) in flight, with natural rock arch in the background. Canyon del Ebro and Rudron, Castilla y Leon, Spain.

Angelo Gandolfi / Golden Eagle (Aquila chrysaetos) swooping with folded wings and extended tallons. Canyon del Ebro y Rudron, Castilla y Leon, Spain. Digital composite

Angelo Gandolfi / Golden Eagle (Aquila chrysaetos) swooping with wings completely folded. Canyon del Ebro y Rudron, Castilla y Leon, Spain.

Pascal Kobeh / The Zaci cenote with people swimming, in the middle of Valladolid, Yucatan peninsula, Mexico.

Juan Carlos Munoz / Lagoons of Gayangos with surrounding countryside of woodlands and fields, aerial view. Merindad de Montija, Burgos, Castile and Leon, Spain. June 2019.

Juan Carlos Munoz / Cut agricultural field with scattered trees, aerial view. Hornillastra, Merindad de Sotoscueva, Burgos, Castile and Leon, Spain. June 2019.

Juan Carlos Munoz / Agricultural landscape of Hornillastra, a mosaic of fields, woodlands and scrub, aerial view. Hornillastra, Merindad de Sotoscueva, Burgos, Castile and Leon, Spain. June 2019.

Juan Carlos Munoz / Cut agricultural field with scattered trees, aerial view. Hornillastra, Merindad de Sotoscueva, Burgos, Castile and Leon, Spain. June 2019.

Juan Carlos Munoz / Wooded plateau overlooking agricultural landscape, aerial view. Cornejo, Merindad de Sotoscueva, Burgos, Castile and Leon, Spain. June 2019.

Juan Carlos Munoz / Agricultural landscape with patchwork fields and river corridors with trees, aerial view. Cuestahedo, Merindad de Montija, Burgos, Castile and Leon, Spain. June 2019.

Juan Carlos Munoz / Agricultural landscape, a patchwork of fields with hills beyond. Cuestahedo, Merindad de Montija, Burgos, Castile and Leon, Spain. June 2019.

Juan Carlos Munoz / Agricultural landscape, mosaic of fields, aerial view. Cuestahedo, Merindad de Montija, Burgos, Castile and Leon, Spain. June 2019.

Juan Carlos Munoz / Patchwork of agricultural fields including Oilseed rape (Brassica napus) with hills in background, high angle view. Cuestahedo, Merindad de Montija, Burgos, Castile and Leon, Spain. June 2019.

Juan Carlos Munoz / Trees coming into leaf and blossoming surrounded by flowering Gorse (Ulex sp), aerial view. Merindad de Montija, Burgos, Castile and Leon, Spain. May 2019.

Juan Carlos Munoz / Gorse (Ulex sp) scrub flowering in network of fields with scattered trees and surrounded by hedgerows and woodlands, aerial view. Merindad de Montija, Burgos, Castile and Leon, Spain. May 2019.

Juan Carlos Munoz / Gorse (Ulex sp) scrub flowering amongst woodland in spring, aerial view. Merindad de Montija, Burgos, Castile and Leon, Spain. May 2019.

Juan Carlos Munoz / Countryside with small fields surrounded by hedgerows with trees, aerial view. Merindad de Montija, Burgos, Castile and Leon, Spain. May 2019.

Juan Carlos Munoz / Countryside with patchwork of small fields bordered by hedgerows, woodland in distancem, aerial view. Merindad de Montija, Burgos, Castile and Leon, Spain. May 2019.

Juan Carlos Munoz / Woodland dominated by Beech (Fagus sp) and Scots pine (Pinus sylvestris), deciduous trees coming into leaf and blossoming in spring, aerial view. Aguera de Montija, Burgos, Castile and Leon, Spain. Ma...

Juan Carlos Munoz / Woodland dominated by Beech (Fagus sp) and Scots pine (Pinus sylvestris), deciduous trees coming into leaf and blossoming in spring, aerial view. Aguera de Montija, Burgos, Castile and Leon, Spain. Ma...

Juan Carlos Munoz / White stork (Ciconia ciconia), nesting on pylon, Castille and Leon, Spain, January.

Juan Carlos Munoz / Spanish juniper (Juniperus thurifera), Sabinar de Hornuez, Castille and Leon, Spain. October.

Juan Carlos Munoz / Santuario de Nuestra Senora de Hornuez, Castille and Leon, Spain, October 2018.

Juan Carlos Munoz / Cliffs in Hoces del Rio Riaza Natural Park, Castille and Leon, Spain, October 2018.

Juan Carlos Munoz / Cliffs in Hoces del Rio Riaza Natural Park, Castille and Leon, Spain, October 2018.

Juan Carlos Munoz / Agricultural landscape, Montana Palentina, Castille and Leon, Spain.

Juan Carlos Munoz / Aerial view of agricultural landscape, Montana Palentina, Castille and Leon, Spain, January 2019

Juan Carlos Munoz / Aerial view of agricultural landscape, Montana Palentina, Castille and Leon, Spain, January 2019

Juan Carlos Munoz / Aerial view of agricultural landscape, Montana Palentina, Castille and Leon, Spain, January 2019

Juan Carlos Munoz / Aerial view of agricultural landscape, Montana Palentina, Castille and Leon, Spain, January 2019

Juan Carlos Munoz / Aerial view of agricultural landscape, Montana Palentina, Castille and Leon, Spain, January 2019

Juan Carlos Munoz / Agricultural landscape, Montana Palentina, Castille and Leon, Spain.

Juan Carlos Munoz / Aerial view of agricultural landscape, Montana Palentina, Castille and Leon, Spain, January 2019

Juan Carlos Munoz / Agricultural landscape, Montana Palentina, Castille and Leon, Spain.

Juan Carlos Munoz / Aerial view of agricultural landscape, Montana Palentina, Castille and Leon, Spain, January 2019

Juan Carlos Munoz / Aerial view of agricultural landscape, Montana Palentina, Castille and Leon, Spain, January 2019

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 / Young Black or Cinereous vulture (Aegypius monachus) Gredos Mountains, Castilla La Mancha, 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

Loic Poidevin / Bonelli's eagle (Aquila fasciata) on rock, Leon, Spain, February

Loic Poidevin / Golden eagle (Aquila chrysaetos) feeding on Hare (Lepus europaeus), Leon, Spain, February.

Loic Poidevin / Northern raven (Corvus corax) in flight, Leon, Spain, February.

Loic Poidevin / Northern raven (Corvus corax) in snow, Leon, Spain, February.

Loic Poidevin / Common buzzard (Buteo buteo) in flight, Leon, Spain, February.

Loic Poidevin / Common buzzard (Buteo buteo) on the ground in snow, Leon, Spain, February

Loic Poidevin / Red kite (Milvus milvus) in flight, Leon, Spain, February

Loic Poidevin / Red kite (Milvus milvus) in flight, Leon, Spain, February

Loic Poidevin / Red kites (Milvus milvus) in tree, Leon, Spain, February

Loic Poidevin / Red kite (Milvus milvus) in flight, Leon, Spain, February

Loic Poidevin / Rock bunting (Emberiza cia) Leon, Spain, February.

Loic Poidevin / Great bustard (Otis tarda) group in flight, Castille and Leon, Spain, February.

Loic Poidevin / Great bustards (Otis tarda) foraging on grass, Castille and Leon, Spain, February.

Loic Poidevin / Bonelli's eagle (Aquila fasciata) on rock, Leon, Spain, February.

Loic Poidevin / Golden eagle (Aquila chrysaetos) feeding on Hare (Lepus europaeus) Leon, Spain, February.

Loic Poidevin / Golden eagle (Aquila chrysaetos) feeding on European Hare (Lepus europaeus) Leon, Spain, February.

Loic Poidevin / Rock bunting (Emberiza cia) in the snow, Leon, Spain, February.

Loic Poidevin / Common blackbird (Turdus merula) feeding on Rowan (Sorbus aucuparia) berries, Leon, Spain, February.

Loic Poidevin / Song thrush (Turdus philomelos) perched on Rowan (Sorbus acuparia) berries, Leon, Spain, February.

Loic Poidevin / Rock bunting (Emberiza cia) In the snow with Rowan (Sorbus acuparia) berries Leon, Spain, February

Loic Poidevin / Song thrush (Turdus philomelos) feeding on Rowan (Sorbus acuparia) berries, Leon, Spain, February.

Loic Poidevin / Eurasian nuthatch (Sitta europaea) on tree trunk, Leon, Spain, February.

Loic Poidevin / Great tit (Parus major) two perched on branch, Leon, Spain, February.

Loic Poidevin / Eurasian nuthatch (Sitta europaea) on tree trunk, Leon, Spain, February.

Loic Poidevin / Marsh tit (Poecile palustris) on a branch, Leon, Spain, February.

Loic Poidevin / Eurasian blackcap (Sylvia atricapilla) perched on Rowan (Sorbus aucuparia) Leon, Spain, February

Loic Poidevin / Middle spotted woodpecker (Dendrocopos medius) on a tree trunk, Leon, Spain, February.

David Tipling / Almendra dam, Spain's highest dam, Castile and Leon, Spain

David Tipling / Cork oak (Quercus suber) in Arribes del Duero Natural Park (Parque Natural de Arribes del Duero) near Pinilla de Fermoselle, Castile and Leon, Spain. June.

David Tipling / Commercial Cork Oak forest in Arribes del Duero Natural Park (Parque Natural de Arribes del Duero) near Pinilla de Fermoselle, Castile and Leon, Spain June

David Tipling / Western subalpine warbler (Sylvia cantillans) female, Arribes del Duerro, Near Zamora Spain June

David Tipling / Photography hide with one way glass for photographing Bonelli's Eagle (Aquila fasciata) in Arribes del Duero Natural Park (Parque Natural de Arribes del Duero) Spain June

David Tipling / Red-rumped swallow (Cecropis daurica) near Zamora, Spain, June.

Juan Carlos Munoz / Sunflower (Helianthus annuus), close-up. Sunflower plantation in Cuestahedo, Merindad de Montija, Merindades, Burgos, Castilla y Leon, Spain. August.

Brais Seara Fernandez/ BIA / Bluethroat (Luscinia svecica) male calling, Castile-Leon, Spain

Brais Seara Fernandez/ BIA / Common Buzzard (Buteo buteo), Castile-Leon, Spain

Brais Seara Fernandez/ BIA / Northern Goshawk (Accipiter gentilis) male, Castile-Leon, Spain

Brais Seara Fernandez/ BIA / Red Kite (Milvus milvus) flying, Castile-Leon, Spain

Brais Seara Fernandez/ BIA / Eurasian Black Vulture (Aegypius monachus) calling, Castile-Leon, Spain

Juan Carlos Munoz / Waterfall in Orbaneja del Castillo, Burgos, Castilla y Leon, Spain, January 2016.