Holidays

• Northern Experience Wildlife Tours
  
• Papyrus Wildlife Tours

National

• British Butterflies (photos)
  
• Wild About Britain
  
• The Wildlife Trusts
  
• The Natural History Museum
  
• RSPB
  
• British Dragonfly Society
  
• Butterfly Conservation
  
• LIPU Working in Britain for Birds in Italy
  
• The Mammal Society

Photography

• Allan Parker's stock photographs In this link's Alamy search field enter 'allan parker' then click on 'Search' to view Allan's portfolio of over 4000 photographs, many taken at Potteric Carr. Click on a thumbnail image to enlarge.
  
• Trev's bird picture blog Bird photos taken at a number of world destinations visited by Trevor Feltham, including some at Potteric Carr.

Local

• Yorkshire Wildlife Trust
  
• Doncaster Naturalists' Society
  
• John Holmes Weather Station, Cantley
  
• Sorby Natural History Society, Sheffield
  
• Sheffield Bird Study Group
  
• Yorkshire Branch of Butterfly Conservation