Bumble Bees

[lainiej]

I recently was watching a few bumble bees busy on a shrub in a garden and noticed that by their back legs there were 2 yellow spherical bumps and I wondered what they were. Any ideas please?

[Pigletion]

pollen sacs?

[Schutzengel]

They're like two little pockets, one on each of the back legs, and this is where they store the pollen that they collect from the flowers, which they then take back to the hive to store to make the honey.

[masterchef]

They are called Pollen baskets or Corbicula