American Dipper
Cinclus mexicanus
  (L 7.5" WS 11" Wt 2 oz)
Usually nests along streams ...very
thick feathers for cold survival.
 Avon, CO
22Jun2012
When tucked beneath the weather-
proof contour feathers, down
feathers trap pockets of warm air
near the skin and makes life in the
cold possible.
       (Thor Hanson)