Egretta sacra

Pacific Reef Heron - or Pacific Reef Egrets are found in many areas of Asia. They have a wingspan of between 90 and 110 cm and reach an average weight of 400 grams. The species displays an unusual, non-sexual dimorphism, with some members having entirely white plumage ('light' morph) and others (the larger portion) being charcoal-grey ('dark' morph). The reason for the colour variation or "morph", is unknown, though it is most commonly thought to be related to camouflage. The two variations are shown here.  They feed on fish, molluscs and crustaceans. These birds were foraging near Bagara Queensland Australia.