Today a friend who lives near The Witch's Cauldron brought me this
little wasp's nest. It was hanging like a bell from the lintel of
shed door frame.
It is incredibly light and fragile and only about an inch
across. As you
can see the outer casing is made up of three concentric
'bells' with an air
space between them. Excellent insulation design. It seems
that the first
three hexagonal cells in the centre were constructed first.
This left each
cell with three outer walls which were shared by the next ring
From what I've looked up about Tree Wasps they
have a short life cycle
which is all over by early summer except for queens
hibernating and starting
a new nest the following year. I think this nest was
only half built and
would have become more round in shape with a little hole
in the base.