Barbara Williams zeros in on a patch of yellow wildflowers with her binoculars. She leans in slightly, her beetle earrings jangling, and proclaims “that’s definitive.” Williams has spotted the rusty patched bumblebee. Perched on the petals of the cup plant, the bee is identifiable based on its black and white stripes and the tawny patch on its second abdominal segment. “She is undoubtedly a ...