butterflies, clouds, and wind

[Esther Cornelius]

John: I live on the coast in N. CA. I've observed E. editha flying there
in the fog on cold windy days, (though fewer than on warm days). my
guess then was that wasps & cold blooded predators are more scarce, so
it would be a safe time to look for mates. Also they never seemed to fly
to far above the ground, so when they get chilled, they just drop into
the brush for warmth(?). Perhaps the ground temp. is higher than the air
temp.
Bill