Red-throated Loon Identification, All About Birds, Cornell Lab of Ornithology
Red-Throated Diver by Jack Bucknall – UK Rare Breeding Birds Panel
BTO on Twitter: "Small numbers of Red-throated & Black-throated Divers breed in northern Scotland but Great Northern Divers are present only in winter. All 3 winter in coastal waters around the UK
Red-throated diver (Gavia stellata) - MarLIN - The Marine Life Information Network
Red throated diver Photograph by Dean Eades - Fine Art America