Nov 19, 2014 | Birds, Corvids
This is another example of the value of coho salmon carcasses becoming available as winter approaches. It would be interesting to do some research as to why ravens initially appear to be afraid of their food. The interactions between the two ravens is also...
Nov 15, 2014 | Birds, Dipper
Perhaps the value of this video would be to concentrate on how the dipper uses its wings to move underwater. Also thinking about the silvery sheen around the dipper and doing some research as to why this occurs. What adaptions does the American Dipper have for diving...
Nov 14, 2014 | Birds, Dipper
This video shows a few sequences of an American Dipper diving at their normal speed. Watch as it occasionally turns over pieces of wood in the stream. Why does it do...
Nov 13, 2014 | Caddisflies, Insects
This video shows a very tiny caddisfly larva (about 1/4 inch long) that lives on the rock face at Nugget Falls in Juneau, Alaska The caddisfly was discovered a few years ago and the species was new to science. This is (so far) the only place where this species has...
Nov 13, 2014 | Birds, Dipper
This video shows an American Dipper searching for aquatic insects and fish underwater. Notice in the fairly shallow water how it uses both its legs and wings to propel itself. In the deeper water it uses its wings and basically “flies” underwater. In one...