American bumblebees disappeared from 8 states, face extinction

American Bumble Bee Could Be Next on Endangered Species List, And Honey Bees Could Be Part of the Problem, Chicago News

10 Things You Didn't Know About Bumblebees

Rusty Patched Bumblebee Officially Listed as Endangered

The Bumblebee's Plight: Why It Is Disappearing in the U.S. - WSJ

American Bumblebee Takes Step Toward Endangered Species Act Protection

Alaska bumblebees are thriving — High Country News – Know the West

Rusty-Patched Bumble Bee Discovered Smithsonian's National Zoo and Conservation Biology Institute

The American bumblebee is on the decline

Disappearing bumblebee species under threat of extinction

U.S. Lists a Bumble Bee Species as Endangered for First Time

Bumble Bees of North America