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 / Little Bustard (Tetrax tetrax) male display, jumping on the lekking ground, Guerreiro, Castro Verde, 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.

Roger Powell / Stone Curlew (Burhinus oedicnemus) pair walking through a flower meadow, Castro Verde, Portugal, April

Roger Powell / Red-legged Partridge (Alectoris rufa) portrait of male perched on a prominent boulder & calling over territory. Castro Verde, Portugal, April

Roger Powell / Little Bustard (Tetrax tetrax) male perched on a favourite stone, and calling at lek, Castro Verde, Portugal, April

Roger Powell / Great Bustard (Otis tarda) male in partial display as he walks through the communal lek, Castro Verde, Portugal, April

Roger Powell / Male Common Quail (Coturnix coturnix) perched on a boulder surveying its display area Castro Verde, Portugal, April

Roger Powell / Stone curlew (Burhinus oedicnemus) looking at chick poking its head out of its back feathers, Guerreiro, Castro Verde, Alentejo, Portugal, April