Brent Stirton's best photograph – Congo wildlife rangers carry a dead silverback

The migration of animal species is a common natural event that happens each autumn across the North American continent. Many species of birds and even mammals, such as the great whales, travel thousands of miles to over-winter in warmer climates. Check out these photos of one of the most spectacular migrations.

The Guardian

Last updated on 22 October 2015

Type: 
Media Watch
Country: 
Democratic Republic of the Congo (Kinshasa)
Region: 
Africa
Threats: 
Illegal trade
Species: 
Gorilla beringei beringei
Species group: 
Terrestrial mammals