General
Hull Biodiversity Action Group
North Cave Wetlands
Scarborough Field Naturalists Society
Spurn Bird Observatory
Yorkshire Naturalist Union
York Ornithological Club
Yorkshire Wildlife Trust
Filey Brigg Ornithological Group
Yorkshire and Humberside Biodiversity Forum
Environment Agency
English Nature
South Holderness Countryside Society

Birds
BTO
RSPB
RSPB East Yorkshire
Yorkshire Red Kites
British Birds Magazine
Birdguides
Yorkshire Birding
British Birds Rarities Committee
British Ornithologists Union
Birdtrack
Hull Bird Survey 2006-2007

Butterflies and Moths
Butterfly Conservation
Yorkshire Butterflies
Yorkshire Moths
The Cockayne collection: British and Irish butterflies and moths

Dragonflies
East Yorkshire Dragonflies
British Dragonfly Society

Flora and Fungi
The Plants of Hull
East Yorkshire Fungus Group

Mammals
Mammal Society
Yorkshire Mammal Group
Bat Conservation Trust
East Yorkshire Bat Group