The Society of International Wildlife and Nature Photographers staged this year's Bird Photographer of the Year contest in aid of the RSPB, the UK's Royal Society for the Protection of Birds.
The Society of International Nature and Wildlife Photographers is for pro and enthusiast photographers who enjoy photographing the natural world, and describes itself as the fastest growing worldwide association for serious photographers. If you would like to join, click here.
OGN features a handful of its favourites from this year's competition, including the overall winner, but if you would like to view all the entries (and there are a lot of them!), click here and scroll through the numerous pages.