Why Would a Bumblebee Ignore a Hillside of Flowers?

Bumblebee Queens by Sara Mintz Broadcast 5.21 and 5.26.2017 Listen:   Recently, I was walking on Mount Jumbo, an open, dry, grassy slope, admiring the arrowleaf balsamroot flowers. It was grey shading to dreary, but the yellow flowers were cheerful and sunny,...