John Chan / Honey bees (Apis mellifera) swarming on an old gas tank and establishing a new nest site within, with some individuals beating their wings to create air circulation, Southern California, USA, February...

John Chan / Honey bees (Apis mellifera) gathering at the entrance to their nest in a hollowed log, Bolsa Chica Ecological Reserve, California, USA, September.

John Chan / Honey bees (Apis mellifera) gathering at the entrance of their nest in a hollow log, with some returning workers carrying pollen baskets, Bolsa Chica Ecological Reserve, California, USA, October.

Chien Lee / Orchid Bee (Euglossa sp) sleeping by biting leaf, Utria National Park, Colombia

Michael Hutchinson / Slow motion clip of a Common carder bumblebee (Bombus pascuorum) feeding from a Viper's bugloss (Echium vulgare) flower, Bristol, England, UK, September.

Phil Savoie / Red tailed bumblebee (Bombus lapidarius), visiting Clover (Trifolium) flower, Monmouthshire, Wales, UK. June.

Agustin Esmoris / Honey Bee (Apis mellifera) feeding on Lavender (Lavandula sp) flower nectar, Argentina

Solvin Zankl / Honey bee (Apis mellifera) queen standing surrounded by workers, Kiel, Germany, May.

Solvin Zankl / Honey bee (Apis mellifera) swarm, Kiel, Germany, May.

Solvin Zankl / Honey bee 1+Apis mellifera+2 worker on freshly made honey comb, Kiel, Germany, May.

Solvin Zankl / Honey bee (Apis mellifera) worker on freshly made honey comb, Kiel, Germany, May.

Solvin Zankl / Honey bee (Apis mellifera) collecting pollen on Goat willow (Salix caprea) Kiel, Germany, April.