The Observer's 20 photographs of the week

Three two-month old Oriental Pied Hornbills are displayed at the Jurong Bird Park's Breeding and Research Centre in Singapore. The trio were hatched after successful artificial incubation at the bird park when their eggs were rescued on an offshore island Photograph: Wong Maye-E/AP

Supporters of Venezuela's late president Hugo Chávez keep themselves warm while waiting to view his body lying in state at the military academy in Caracas Photograph: Jorge Dan Lopez/Reuters

A view of a translucent banner with a portrait of the late Venezuelan President Hugo Chávez in Caracas. The country gave Chávez a rousing sendoff through the city's streets after he died of cancer at the age of 58 Photograph: Eitan Abramovich/AFP

A boy and a bulldog enjoy a moment of calm at the Crufts Dog Show in Birmingham Photograph: Darren Staples/Reuters

Chilean riot policemen protect themselves take cover during clashes with students at a protest demanding improvements to the public education system Photograph: Claudio Santana/AFP

A man checks what will be the first European Train Control System line in Profondeville, Belgium. The modernisation will enable the system to automatically stop a train that goes through a red light or exceeds the speed limit Photograph: Bruno Fahy/AFP

A model presents a creation by Marc Jacobs for Louis Vuitton's ready-to-wear fashion collection in Paris Photograph: Jacques Brinon/AP

A man takes a walk during his lunch break at Deoksu Palace in Seoul, South Korea Photograph: Kim Hong-Ji/Reuters

A girl runs past pro-peace graffiti written during the post-election violence of the previous election in 2007 and a poster of presidential candidate Raila Odinga in the Kibera slum in Nairobi, Kenya Photograph: Ben Curtis/AP

Two-year-old-orangutan, Dewi, explores her environment at Melbourne Zoo Photograph: Arthur Xanthopoulos/Barcroft Media

A Hindu sadhu applies paint to his forehead at his ashram at Pashupatinath Temple for the Shivaratri festival. Shivaratri is dedicated to Lord Shiva; holy men mark the occasion by praying, smoking marijuana or smearing their bodies with ashes Photograph: Navesh Chitrakar/Reuters

Bahraini youths hold a placard during the funeral of Mahmud al-Jaziri on Al Nabih Saleh island. Al-Jaziri succumbed to his wounds after he was shot during clashes between police and protesters marking the second anniversary of the 14 February 2011 uprising Photograph: Mohammed Al-Shaikh/AFP

The sculpture Cloud Gate, commonly known as The Bean, is covered in snow in Chicago, Illinois Photograph: Brian Kersey/Getty

Locusts cluster in the Israeli village of Kmehin in the Negev desert. A swarm of tens of millions of locusts has crossed from Egypt to the Gaza Strip, Israel and Jordan Photograph: Menahem Kahana/AFP

Manchester United's Robin van Persie miss-kicks the ball during the match between Manchester United and Real Madrid. United lost 2-1 Photograph: Pierre-Philippe Marcou/AFP

Flint the dog next to a new sculpture by Mark Wallinger. The statue, made of marble and resin, is a life-size representation of a thoroughbred racehorse Photograph: David Levene/Guardian

Pakistani women cook for their family with a fire in their makeshift home in Islamabad, Pakistan Photograph: Muhammed Muheisen/AP

Linda Nylind photographed the Pangolin Editions sculpture foundry. This picture is of the restoration of the impressive bronze of Hugh Lupus by GF Watts in the large sculpture room Photograph: Linda Nylind/Guardian

Delegates from Chinese People's Liberation Army march from Tiananmen Square to the Great Hall of the People to attend a plenary session of the National People's Congress Photograph: Feng Li/Getty

Workers cordon off a building in the Russian Black Sea resort of Sochi. The building started to move after a tunnel being built for the 2014 Winter Olympics collapsed nearby Photograph: Mikhail Mordasov/AFP