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Anchor text: Identification of Caspian Gull

Wikipedia: Caspian gull

Anchor text: A history of Theale Old Gravel Pit and Englefield Park

Wikipedia: Theale

Anchor text: A history of birdwatching at Reading Sewage Farm

Wikipedia: Norman H. Joy

Anchor text: "Bird-watching before Birding" by Ian Wallace

Wikipedia: Ian Wallace (ornithologist)

Wikipedia: Wikipedia:Reference desk/Archives/Science/2009 December 4

Anchor text: Berksbirds - History of Theale old gravel pit and Englefield Park

Wikipedia: Ken Simmons