At a bee keeping committee meeting tonight the subject of wasps nests cropped up. A member had removed a large nest from her attic and was amazed to note that the outer covering was scalloped and showed different colours.
I have seen this on wasps nests produced underground. Do the different colours tend to reflect different sources of wood used to build the nest? However, wasps nest hanging in bushes, sheds etc which are exposed to light and maybe wind and rain have an outer shell which is a uniform grey in colour.
Two questions, are the nests built by different wasp species or are the hanging nests not built in the dark underground covered with a waterproof outer layer as protection?