Paper wasps build their nests out of paper.  The paper wasp makes its paper by chewing tiny pieces of wood and mixing the pulp with saliva in this mouth.

The wet paper paste is then patted, pulled and stretched to form rows of cells, like those of a bee’s honeycomb.  When the pulp dries, it becomes paper—something like the paper your newspaper is made of.

Paper Wasp

Each cell in the paper wasp’s nest  is a nursery in which a baby wasp will grow.  Hornets and yellow jackets make paper nests, too.

The paper nests are sometimes hung from tree branches or stuck beneath the rafter of an old barn.  They may also be built in the holes in the ground.

Not all wasps make paper nests.  The carpenter wasp bores holes in trees or old posts.  The mud wasp builds a nest of mud.  The cuckoo wasp doesn’t build a nest.  It lays its eggs in a mud wasp’s nest while the occupant is away. – Dick Rogers