Roger Powell / Stone curlew (Burhinus oedicnemus) approaching nest of two eggs, Guerreiro, Castro Verde, Alentejo, Portugal, April

Roger Powell / Cattle egret (Bubulcus ibis) in flight carrying a large stick to its nest, Guerreiro, Castro Verde, Alentejo, Portugal, May

Roger Powell / Cattle egret (Bubulcus ibis) in flight, Guerreiro, Castro Verde, Alentejo, Portugal, May

Roger Powell / Pair of European Bee-eater (Merops apiaster) on a bank above their nest hole in front of flowers. Note regurgitated pellets of insect remains. Alentejo, Portugal, April.

Roger Powell / European Bee-eater (Merops apiaster) with a bee landing on a branch by its mate. Alentejo, Portugal, May.

Roger Powell / European Bee-eater (Merops apiaster) courting a female by offering her a Small Copper butterfly (Lycaena phlaeas). Alentejo, Portugal, April.

Roger Powell / Kingfisher (Alcedo atthis) territorial display to warn rivals. Castro Verde, Alentejo, Portugal, April.

Roger Powell / Kingfishers (Alcedo atthis) engaged in threat display to warn tresspassing rival. Castro Verde, Alentejo, Portugal, April.

Kristel Richard / A rare Sorraia stallion cantering, Coudelaria Nacional (National Stud Farm), in Alter do Chao, District of Portalegre, Alentejo, Portugal.

Kristel Richard / Portrait of a rare Sorria stallion, Reserva Natural do Cavalo do Sorraia, Alpiarca, District Santarem, Alentejo, Portugal.

Luis Quinta / Eagle owl (Bubo bubo) chick, close-up of face, Alentejo, Portugal

Luis Quinta / Juvenile male Montpellier snake (Malpolon monspessulanus) Alentejo, Portugal