RSPB is Europe’s largest wildlife conservation organization and its online picture library contains thousands of bird images. However, its vast collection also has other images such as that of insects, mammals, plants, landscapes and environmental issues. Over two dozen leading photographers supply these wildlife and nature photos to RSPB Images which in turn make these photos available for licensing and prints. Picture sales provide funding for the conservation mission of RSPB. Pricing for images are dependent on factors such as usage, print run, picture placement, size and geographical location.