The week in wildlife

A female junco bird eats nyjer seed in Omaha, Nebraska Photograph: Nati Harnik/AP

A honey bee adds pollen to its hind leg from a flower in New Delhi, India Photograph: Gurinder Osan/AP

A newborn Olive Ridley sea turtle is held by a volunteer at a conservation centre in El Astillero, Nicaragua. Fauna and Flora International (FFI) is promoting alternatives to local communities that have long depended on the sale of turtle eggs. The project employs local people, often ex-poachers, as guards to patrol beaches and maintain hatcheries where clutches of eggs are protected in controlled conditions during incubation Photograph: Esteban Felix/AP

Four-wheel drive tracks cut through a huge oil slick on a beach near Cape Moreton on Moreton Island, Queensland, Australia, after the cargo ship Pacific Adventurer was hit by cyclone Hamish, spilling oil and containers of ammonium nitrate into the ocean off southern Queensland Photograph: Dave Hunt/EPA

A dead blowfish on the oil slicked Marcoola beach on the Sunshine Coast, Australia Photograph: Bradley Kanaris/Getty Images

A polar bear growls at St Felicien zoo in Quebec. Canada is home to approximately 15,000 of the estimated 20,000-25,000 polar bears worldwide, according to Environment Canada Photograph: Mathieu Belanger/REUTERS

This undated photo from the National Oceanic Atmospheric Administration (NOAA) shows a recently discovered orange bamboo coral. NOAA said six of the seven species found off Hawaii may represent entirely new genera, calling it a "remarkable feat" Photograph: NOAA/AP

Jonatan, a one-tonne male African elephant, trumpets his farewell from his container as he sets off on a long journey to the zoo of Poznan, Poland, from the Nyiregyhaza animal park in Hungary Photograph: Attila Balazs/EPA

Children from Gower primary school are watched by a sloth at London zoo as they help zoo-keepers feed the animals Photograph: Dan Kitwood/Getty Images

Birds perch on a wall in Hollywood, California Photograph: Mario Anzuoni/REUTERS

Dates trees are ravaged by a sandstorm in Riyadh, Saudi Arabia Photograph: Hassan Ammar/AP

Birds circle a man searching through rubbish at a dump in Colombo, Sri Lanka Photograph: Buddhika Weerasinghe/REUTERS

Santino, the stone-throwing chimp at Furuvik zoo in Sweden, fashions and collects missiles to hurl at zoo visitors. Scientists say he is living proof that animals can plan for future events. Zoo staff had to step in to protect members of the public who regularly found themselves being pelted with stones and lumps of concrete Photograph: Furuvik Zoo/PA

A "black soldier" fly (Hermetia illucens), whose larvae are used to produce an animal feed ingredient in a bioconversion project launched by the Food and Agriculture Organisation of the United Nations. This bioconversion process starts with the fermentation of palm kernel meal whose smell attracts the insect to lay its eggs on it. The protein enriched biomass obtained from the larvae will be used to replace fish meal in experimental projects in Indonesia Photograph: Saurin Hem/AFP/Getty Images

A woman on a sapling plantation in Linyi, Shandong, China. According to the State Forestry Administration last year, 2.3bn trees were planted by volunteers, while the urban green coverage ratio in China reached 35%. China is attempting to build a Great Green Wall to halt sand and dust storms Photograph: WU HONG/EPA

Fruit bats are seen as they rest on tree branches within the forested area of Subic Bay in the province of Olongapo, north of Manila. Thousands of fruit bats live within the protected forests of the former US military base and have attracted tourists to the area Photograph: John Javellana/REUTERS

Ramblers find their way among dead trees in Thornham, Norfolk. The trees died after the North sea flooded the coastline, suggesting further evidence of climate change Photograph: Si Barber

Harp seal pups lie on an ice floe in the Gulf of St Lawrence, Canada. The quota for the annual east coast harp seal hunt is expected to be released later this month Photograph: Paul Darrow/Reuters