The week in wildlife – in pictures

A salmon leaps out of the Sea of Okhotsk (Japan) while on its way to its home river Photograph: The Asahi Shimbun/Getty Images

A brown bear claws for salmon in the Shiretoko river, on Japan's north-eastern island of Hokkaido Photograph: KIMIMASA MAYAMA/EPA

Fallen leaves in autumn colours in Munich, southern Germany Photograph: Matthias Schrader/AP

Can you spot these well-camouflaged sea creatures? There's a bluespotted stingray hiding in the sand only visible by its big googly eyes, a seahorse that's barely distinguishable from the sea fan it's resting on, and shrimps hiding among the colourful coral Photograph: Ed Brown/Rex Features

A crimson speckled moth. Increasing numbers of rare migrant species are believed to have arrived in the UK due to the hot summer and warm autumn Photograph: Robert Thompson/Butterfly Conservation

It looks like an optical illusion, in fact it's thousands of wader birds at the RSPB's Snettisham reserve in Norfolk. During the 'Snettisham spectacular', the huge flock creates amazing ripples and patterns as the birds huddle together Photograph: Tom Mason/Rex Features

Orangutans wrap their hands around a tree in Tanjung Puting national park in Borneo, Indonesia Photograph: Barbara Walton/EPA

An Atlas moth – the largest moth in the world – on a tree branch at the American Natural History Museum's butterfly conservatory Photograph: Emmanuel Dunand/AFP/Getty Images

A common loon incubating her eggs at dusk, photographed by Connor Stefanison, one of the speakers at this weekend's WildPhotos 2013 in London Photograph: Connor Stefanison/WildPhotos 2013

Elephants greet each other at dawn in the Amboseli national park in southern Kenya. This week a census began of elephants and other large mammals in the Amboseli-West Kilimanjaro and Natron-Magadi landscape Photograph: Dai Kurokawa/EPA

Zebras also in the Amboseli national park Photograph: TONY KARUMBA/AFP/Getty Images

A caterpillar of a red spot butterfly is guarded by red ants at the Dilmah Butterfly Conservation Garden near Colombo, Sri Lanka. The caterpillar secretes a drop of sweet liquid every few hours which the ants feed on Photograph: M.A. Pushpa Kumara/EPA

A hadeda ibis bird in a park in Cape Town, South Africa. Pest, charming oddity or just background noise, the bird is prevalent in suburban South Africa, sometimes swiping dog food meant for pets, splattering cars with droppings, and disturbing the sleeping with its squawks at first light Photograph: Schalk van Zuydam/AP

Gulls gather above the promenade at Morecambe, Lancashire Photograph: David Billinge/Corbis

Trees reflect in the Trepliner See lake near Treplin, eastern Germany Photograph: Patrick Pleul/AFP/Getty Images

A royal red deer stag in the Grafenberg forest in Duesseldorf, Germany. The rut or mating season of the red deer is triggered by the shorter daytimes of autumn Photograph: Federico Gambarini/EPA

A body of a one-horned rhinoceros at the Kaziranga national park in Assam, India – the only region where the species is found. Forest officials say poachers are the suspected culprits. At least 22 rhinos have been killed in the park this year Photograph: UB Photos/Barcroft India

Two cheetahs team up to try and bring down a wildebeest in Tanzania Photograph: Pia Dierickx /Barcroft Media

Cape fur seals play in giant waves off the Skeleton Coast, Namibia Photograph: Ph.MOES/BirdLife South Africa Oceans of Life photo competition 2013