Outer Hebrides Birds
Look out for Great White Egret
Herons and Egrets – the life of some of our taller residents
Herons and egrets found in UK wetlands
Great Egret Audubon Field Guide
Herons and Egrets – the life of some of our taller residents
Wildlife Print: Fog On White Wings Great Egret — Neal Parekh
Tropical egrets gain a foothold in Britain
Egrets Maine: An Encyclopedia
Country diary: This great white egret lives up to its name
PDF) The changing status of the Great White Egret in Britain
Collins BTO Guide to British Birds by Paul Stancliffe, Paul Sterry
Great Egret Identification, All About Birds, Cornell Lab of Ornithology