On Thu, 8 Jun 1995, Don Baccus wrote:

> Etc. Having seen western kingbirds nest right on the top of transformers,
> is it possible they're a bit warm? Would that seem attractive to
> them?

I know that occasionally Eastern Kingbird eggs get cooked from the (solar)
heat from the powerline crossbars they nest on, so if the heat is
attracting them, it certainly seems to be a maladaptive (dare I say
fatal) attraction. If I nested in Eastern Washington in June, with a
nest exposed to the direct sun, the last thing I would be looking for is
another source of heat!

Chris Hill
Seattle, WA
cehill at u.washington.edu