Lagopus

Lagopus (commonly known as ptarmigans) are prey animals in the Survivor Timeline.

The are very timid and run or fly away when Lara gets near them.

Rise of the Tomb Raider
In Rise of the Tomb Raider, stone ptarmigans can be found throughout the Soviet Installation. They provide feathers Lara can use to craft arrows.

Rise of the Tomb Raider

 * Soviet Installation