Bumbles disperse to spread the seed far away

Precious bumblebees have been on the wing since January, perhaps courtesy of climate change. Only females survive the winter.

Awakening from hibernation, each must find a place to nest and to lay eggs that will hatch into infertile workers. These will help her build a colony. But how does she house-hunt? Do bumblebees set up home locally or head for pastures new?