Boat trips along the Ireng River and its tributary, the Rio Takatu, have two primary target birds as their objective. These are the Hoary Spinetail and Rio Branco Antbird, both Guianan endemics and both highly localized in distribution. These two species are fairly reliably found along the Rio Takatu, though in slightly different habitats. A guide is essential for finding them.
Other birds of interest that can be seen along the river include Capped Heron, Sungrebe, Sunbittern, Tepui Swift, Ruby-topaz Hummingbird, Guianan Slaty-Antshrike, Guianan Warbling Antbird, Guianan Gnatcatcher, Neotropical River Warbler, and a wide variety of other more widely distributed tropical birds.
