Bumblebees are warm-blooded. They generate heat by flapping their wings about 200 times a second Dr Dave Goulson

"Bumblebees are warm-blooded. They generate heat by flapping their wings about 200 times a second.They can fly when the temperature is below freezing.They can still fly which almost no other insects can do." Dr. Dave Goulson, interview on The Organic View Radio Show. (Photo: June Stoyer)