The week in wildlife – in pictures

Autumnal dawn in the Waveney Valley, Mendham, Suffolk Photograph: Graham Turner/Guardian

Two swans search for food in the river Spree in Berlin. Autumn brought sun, some clouds and temperatures up to 16C to the German capital Photograph: Johannes Eisele/AFP/Getty Images

Salmon leap up the Ettrick water in Selkirk, Scotland as part of their annual migration Photograph: David Cheskin/PA

A red squirrel eats a nut in Kielder Forest, Northumberland Photograph: Owen Humphreys/PA

Leaves, berries and mists are among the pick of your spectacular autumn sights
Photograph: Flickr

White-naped cranes, preserved as a natural treasure, seen searching for food in a field in Cheorwon county, South Korea, near the border with North Korea. The migratory birds fly to South Korea from Siberia in autumn to spend the winter there Photograph: Yonhap News Agency/EPA

A 22-month-old tigress (Panthera tigris) is frightened by a dead leaf in Bandhavgarh National Park, India Photograph: Hermann Brehm/Rex Features

Although British bats are doing well, with 9% more being spotted in 2011 than 2010, such as this Brown Long Eared Bat, around the world, bat species are taking a dive. There are more than a thousand bat species and 15% are at risk of extinction. Even more disturbing is the rate at which some species are being lost Photograph: Bat Conservation Trust/PA

GDT European Wildlife Photographer of the Year 2011's Underwater World category winner: A Perfect Hairstyle by Solvin Zankl, showing the deep-water decapod, sergestes lava Photograph: Solvin Zankl/GDT

A flying white-tailed sea eagle performs an acrobatic manoeuvre mid-air on the Isle of Skye, Scotland. This week the RSPB called for a ban on deadly poisons that are killing wildlife Photograph: Will Nicholls / Rex Features/Will Nicholls / Rex Features

A macro photograph of a white lipped tree frog at Wild Life Sydney, Australia Photograph: Brett Costello/Newspix/Rex Features

A hippopotamus calf and mother Nicole are pictured at the Berlin Zoo. The as-yet unnamed calf was born in the zoo on 23 October Photograph: Tobias Schwarz/Reuters

Vultures eat a dead animal in the Jonte gorges in the Cevennes national park, near Saint Pierre des Tripiers, southern France. It is estimated that the vulture population in the Cevennes has reached 1,000 after a project to reintroduce them 30 years ago. In June 2011, the Causses and the Cevennes were added to Unesco's World Heritage List Photograph: Guillaume Horcajuelo/EPA

The white rhino Ceratotherium simum. Killed by poachers for its horn and fuelled by demand from Vietnam, rhino poaching in South Africa shows no signs of abating, with a record 341 killed there this year to date Photograph: Martin Harvey/WWF International

Birds fly out of a snow covered cornfield in State College, Pennsylvania in the US. A snow storm is moving along the east coast of the states and is expected to dump anywhere from a dusting of snow to about 25cm throughout the region, a decidedly unseasonal time for a type of storm more associated with midwinter Photograph: Gene J. Puskar/AP

People walk in the Sauvabelin forest in Lausanne, Switzerland, as the autumn sun illuminates the seasonal coloured trees Photograph: Laurent Gillieron/EPA

A common seal pup with a satellite tag for monitoring location and behaviour being released into the Wash, Norfolk. Six recovering harbour seals were tracked by a satellite transmitter, glued to the fur on the back of their neck. For around six months following their release, data was collected about trends in the diving ability of the seals, giving an indication of how fit they were Photograph: Andrew Forsyth/RSPCA/PA