Sable Island Horses is produced by True North Fine Images:
www.truenorthfineimages.com

For more information on Sable Island the best resource is the website of Zoe Lucas, the resident scientist and wild horse expert: 
www.greenhorsesociety.com

Other sites of interest:
www.lidgardphotography.com
www.sableislandhorses.com
www.canadiannaturephotographer.com