 Sometimes the prey will attempt to escape and this can result in a fluttering pursuit before returning to the perch.Depending on the species of bird, there are observable variations on this behavior.Some species, such as the olive-sided flycatcher of North America and the ashy drongo of the Indian Subcontinent, tend to choose an exposed perch, such as a dead tree branch overlooking a clearing, whereas others, such as the North American Acadian flycatcher and the Asian small niltava perch within the cover of foliage deep in a forest or woodland habitat.