A society of international wildlife photographers centred in Germany https://www.gdtfoto.de/seiten

A top natural history photo library that markets Stephen's pictures. www.naturepl.com

Mostly birds and mammals and a smattering of bugs! www.leedalton.com

Review of Stephen's work http://cpn.canon-europe.com/content/interviews/stephen_dalton.do

Greenpeace is one of the world's most effective environmental organisations. www.greenpeace.org

The Global Canopy Programme is an alliance of 37 scientific institutions in 19 countries, which lead the world in forest canopy research, education and conservation. www.globalcanopy.org

Explore over 30 wild places in Sussex www.sussexwildlifetrust.org.uk

A leading Natural History library in USA, specialising in high quality wildlife pictures www.mindenpictures.com

A gifted photographer of people, their achievements and eccentricities www.drewgardner.com