Mandrills in African rainforest

Mandrills in African rainforest

NAIROBI, Kenya - Photo taken in May 2012 shows the alpha male of a group of mandrills in a rainforest in southeastern Gabon, near the border with the Republic of Congo. The International Union for Conservation of Nature has designated mandrills as "vulnerable" on its Red List of threatened species. (Photo by Tomoaki Nakano)

Mandrills in African rainforest

Mandrills in African rainforest

NAIROBI, Kenya - The alpha male of a group of mandrills stares at a young male mandrill approaching the group in a rainforest in southeastern Gabon, near the border with the Republic of Congo. The International Union for Conservation of Nature has designated mandrills as "vulnerable" on its Red List of threatened species. (Photo by Tomoaki Nakano)

Mandrills in African rainforest

Mandrills in African rainforest

NAIROBI, Kenya - Mandrills approach a camera seeking food in a rainforest in southeastern Gabon, near the border with the Republic of Congo. The International Union for Conservation of Nature has designated mandrills as "vulnerable" on its Red List of threatened species. (Photo by Tomoaki Nakano)

Mandrills in African rainforest

Mandrills in African rainforest

NAIROBI, Kenya - A group of mandrills are seen in a rainforest in southeastern Gabon, near the border with the Republic of Congo. The International Union for Conservation of Nature has designated mandrills as "vulnerable" on its Red List of threatened species. (Photo by Tomoaki Nakano)

Mandrills in African rainforest

Mandrills in African rainforest

NAIROBI, Kenya - A mandrill mother and child call back to their group in a rainforest in southeastern Gabon, near the border with the Republic of Congo. The International Union for Conservation of Nature has designated mandrills as "vulnerable" on its Red List of threatened species. (Photo by Tomoaki Nakano)

Mandrills in African rainforest

Mandrills in African rainforest

NAIROBI, Kenya - A local hunter with a gun walks near a rainforest where mandrills live in Gabon. The International Union for Conservation of Nature has designated mandrills as "vulnerable" on its Red List of threatened species. (Photo by Tomoaki Nakano)