What I found to be very relaxing were the trips along the river to spot birds.

They say a picture is worth a thousand words.  All I can say about these pictures of the river and lakes is that my photography is but a pitiful shadow of the reality.

Hanging bird nests, high flying hawks and vulture, vultures in the trees, a kingfisher, cranes sitting and flying, a distant hornbill, and the elusive hoatzin bird.  This last is photographed only after a trek thru the jungle and a climb to a platform that overlooks a favored nesting area.

In defense of my photographs -- yes, I know they are pitiful.  I did not know what to expect and the camera I took to the Amazon was my old Pentax ME with just two lenses: an old 28-80mm f3.5-4.5 zoom and my compact 500mm f8 mirror telephoto.  The film was standard 'shoot kids in the backyard' Kodak ASA200 print .  Not the best choice.  While some days were sunny, a grey overcast is more to be expected.  Need a faster film to deal with the subdued lighting.  My 50mm f1.4 would have been very useful on the jungle trails where the sun is blocked by the tall trees.
But you know what -- I don't care that the photos did not come out great or even very good.  Just being in the Amazon, cruising the rivers, was just so much fun.