Phil Savoie / European honey bee (Apis mellifera) worker at hive entrance emitting Nasonov pheromone from abdominal gland and fanning wings to spread the scent to returning workers, Monmouthshire, Wales, UK. Septem...

Nick Upton / Hornet (Vespa crabro) workers emerging from their nest in a hollow tree trunk, with one stopping to fan its wings in the entrance to ventilate the nest, Lower Woods Gloucestershire Wildlife Trust rese...

Nick Upton / Three Hornets (Vespa crabro) guarding nest entrance in hollow tree. One wing fanning to help cool it. Gloucestershire, UK, October.

Stephen Dalton / Honey bee (Apis mellifera) worker bees fanning at hive entrance, UK

Gerry Ellis / Honey Bee (Apis mellifera) pair fanning wings, North America

Kim Taylor / Cutout of Honey bee worker fanning to keep hive cool {Apis mellifera} UK

Doug Wechsler / European hornet (Vespa crabro) worker fanning wings to cool nest in hollow tree, Merion Botanical Park, Pennsylvania, USA. September.

Doug Wechsler / European hornet (Vespa crabro) worker fanning wings to cool nest in hollow tree, Merion Botanical Park, Pennsylvania, USA. September.