Great White Egret BTO - British Trust for Ornithology

Feathered fishermen are masters of the waiting game – Suffolkwilds

Collins BTO Guide to British Birds by Paul Stancliffe, Paul Sterry

WeBS - The Wetland Bird Survey

Little Egret - Norfolk Wildlife Trust

Tropical egrets gain a foothold in Britain

Discover the Majestic Great White Egret in Oaks Bottom Wildlife

Details : Little Egret - BirdGuides

PDF) The changing status of the Great White Egret in Britain

Collins BTO Guide to Rare British Birds: Sterry, Paul, Stancliffe