Guacharos Jungle

The Guácharos Jungle covers the humid Andean slopes between the upper Magdalena and the Amazonian lowlands. Mountain forest surrounds the caves of the guácharos, or oilbirds, nocturnal birds that nest in darkness and fly out to feed on fruit. Streams run through the forested ridges and valleys, descending toward larger rivers on either side of the Andes. The woodland forms a transition between high mountain and tropical forest environments.