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.

Solvin Zankl / Honey bee (Apis mellifera) queen standing surrounded by workers, 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 bees (Apis mellifera) forming living bridge, Kiel, Germany, June.

Solvin Zankl / Honey bee (Apis mellifera), bees can link up to form a bridge, however in this image the bridge has just collapsed leaving just three bees linked. Kiel, Germany, June.

Solvin Zankl / Honey bee (Apis mellifera) workers caring for queen cells, Kiel, Germany

Solvin Zankl / Honey bee (Apis mellifera) workers looking after queen cells, Kiel, Germany

Solvin Zankl / Honey bee (Apis mellifera) on natural honeycomb, Kiel, Germany, May.

Solvin Zankl / Honey bee (Apis mellifera) on comb with honey, Kiel, Germany, June.

Solvin Zankl / Honey bee (Apis mellifera) on comb with honey, Kiel, Germany, June.

Solvin Zankl / Honey bee (Apis mellifera) comb filled with honey, Kiel, Germany, June.