The week in wildlife

Lancashire, UK: One-month-old hen harrier chicks in Bowland moor have been fitted with microwave transmitter devices to track their movements by Natural England ornithologist Stephen Murphy. Natural England is looking to boost numbers of the rare bird of prey by electronically tagging them. Follow the progress of the family as they raise their chicks on our hen harrier video blog Photograph: Chris Thomond/Guardian

Iowa, US: A farmer inspects one of his sickly corn plants. The region has been hit with heavy rains recently that are estimated to have affected 17% of Iowa's corn and soybean crops Photograph: Steve Pope/EPA

Sydney, Australia: A Fijian crested iguana is held by a zoo keeper at Taronga zoo. The endangered species, which only survives on a few Fijian islands, will be one of eight species to receive financial support by the zoo to assist animals in their natural habitats Photograph: Paul Miller/EPA

Salzburg, Austria: A small rodent burrows in to the pitch at the Wals Siezenheim stadium during the Euro 2008 football championships Photograph: PA

Iowa, US: Hogs are stranded on the roof of a farm as floodwaters continue to overrun the town of Oakville, Iowa. The floodwaters of the Mississippi continue to move south, now threatening towns in Illinois and Missouri Photograph: Win McNamee/Getty

Tehran, Iran: Kooshki, an Asiatic cheetah, captured by a poacher as a cub and rescued by the government, walks in his enclosure at the Pardisan zoo Photograph: Caren Firouz/Reuters

Berlin, Germany: An ostrich stands in its enclosure at an ostrich farm. The ostrich is the largest living species of bird Photograph: Michael Urban/AFP/Getty

Vienna, Austria: The newly named polar bear cubs, Nanuq and Arktos, inspect fresh fish and frozen food at their enclosure at the Schöbrunn Zoo Photograph: Lilli Strauss/AP

Birmingham, UK: A baby bamboo shark being fed tiny mysis shrimps by hand at the National Sea Life Centre in Birmingham. Staff at the aquarium are handfeeding baby sharks after the choosy fish refused to dine any other way Photograph: PA

San Diego Zoo, US: Five red river hogs root around their home. The piglets get their striped and spotted look from a combination of dark skin beneath light hair. This colouring helps young red river hogs blend into their native rain forest habitat in central and western Africa. Photograph: Ken Bohn/AP

Atlanta, US: Snorkellers swim in the Georgia aquarium's ocean voyager tank with a stingray Photograph: John Bazemore/AP

Edinburgh, Scotland: A highland cow is prepared for the Royal Highland Show. The event is the biggest in the Scottish farming calendar with more than 100,000 visitors expected over the four-day event, which started on Thursday Photograph: Jeff J Mitchell/Getty

Kandahar, Afghanistan: British soldiers from the Royal Army Veterinary Corp and explosive search dog, Leanna, rest in barracks during Operation Daor Bukhou Photograph: Marco Di Lauro/Getty