The Amazon is classified as a “whitewater” river, i.e., it is turbid, yellowish-brown, and very limited in transparency because of the large load of suspended sediment. The tributaries, channels,...
Sandstone Shrikethrush (Colluricincla woodwardi) inhabits cliffs, gorges, boulder-strewn ridges, and crevices. John Thomas Tunney discovered the bird on...