On the morning of our third day we rose at dawn to travel up the Manu River, which joins the Rio Alto Madre de Dios a few kilometers upstream from Boca Manu. Unlike the relatively clear Rio Alto Madre de Dios, which flows over a cobbled bed, the Manu is a brown, muddy stream and its banks frequently bear the scars of turbulent flows in the wet season. Piles of branches and washed-over trees line the banks and impede the flow of the water in many places, providing refuges for both animals and birds.









