Despite a glamorous naming ceremony for 40 infant gorillas in Rwanda, the endangered creatures face a deadly threat from overcrowding and vicious inter-family fights, which conservationists warn could undermine decades of work. Around half of the babies may not survive to adulthood.

• Half of young gorillas born over the past decade have died due to fights between adult male silverbacks.
• Eugene Mutangana, a conservation management expert at the Rwanda Development Board, explained that winning silverbacks eliminate infants from rival males.
• Rwanda has launched a program to expand the gorillas' habitat by 23 percent, relocating around 3,400 human households, but it will take over 10 years to complete.