• During winter in Juneau I often notice a variety of insects on the snow.
  • This seems to happen mostly when the temperature rises above 32 degrees for a short period.
  • Why would an insect run about on the snow during winter?
  • It could be for mating — easier to find a mate with fewer species flying about — less birds about to eat them.
  • Some look for prey to eat.
  • Springtails use the fairly flat snow to move from one habitat to another — they apparently orientate on the sun or dark horizon to go in a constant direction.
  • It is fun to lay down on the snow and watch the tiny insects moving about and to think about why.