Amazonian bumble bee

Most bumblebees nest under the ground, but this one builds its nest on top of the ground, next to tree roots or bushes.

The workers cover the nest with a thick roof of twigs, leaves and roots. It stays dry inside even when the Amazon rain pours down.

It makes walking paths on the forest floor, a bit like ants do. Lines of five or more bees have been seen walking along them.

On the paths, the bees cut leaves into tiny pieces and pass them back to each other to build the roof of the nest.

Scientists think that on very hot days, some workers stand at the door and fan the nest with their wings to cool it down.