24 hours in pictures

Barranquilla, Colombia: Dancers get ready to parade in Barranquilla's carnival Photograph: Joaquin Sarmiento/AFP/Getty Images

Bogor, West Java: A lovebird looks out of its cage during a singing competition. Around 400 people gather in a small forest to participate in bird singing competitions. The competitors each pay $8 to participate in a 20-minute singing competition, and the winner collects $200 in prize money Photograph: Beawiharta/Reuters

Ras Lanuf, Libya: A Libyan rebel fighter mans a checkpoint in the oil town of Ras Lanuf, where up to 10 people were killed and more than 20 wounded in clashes with pro-Gaddafi forces Photograph: Marco Longari/AFP/Getty Images

Ras Ajdir, Tunisia: Men from Bangladesh, who worked in Libya but have recently fled the unrest, wake up in a refugee camp at the Tunisia-Libyan border Photograph: Emilio Morenatti/AP

Cologne, Germany: Young Elea takes part in a carnival Photograph: Rolf Vennenbernd/EPA

Paraty, Brazil: A man spreads mud on his friend's back ahead of carnival celebrations Photograph: Rodrigo Abd/AP

Hong Kong, China: A boy rides his bicycle along the promenade of the West Kowloon cultural district of the city Photograph: Ed Jones/AFP/Getty Images

Guadalajara, Mexico: Gay rights activists carry a gay pride flag during a march Photograph: Alejandro Acosta/Reuters

Titanyen, Haiti: Haitians provide water for their animals at a small pond next to a tap on the side of the road Photograph: Hector Retamal/AFP/Getty Images

Colombo, Sri Lanka: Children watch the sun rising through the mist in the suburb of Makola. A noticeable change in temperature has shrouded the city in dense mist Photograph: MA Pushpa Kumara/EPA

Port-au-Prince, Haiti: A beggar, his body covered with white paint, walks along a street Photograph: Ramon Espinosa/AP

Switzerland: Stars twinkle over a sea of fog covering parts of central Switzerland, as seen from Fronalpstock mountain Photograph: Alessandro Della Bella/EPA