Little is known about the nesting activities of some lineages of megachiline bees. Two scientists made use of their earlier observations, gathered during a survey in the United Arab Emirates, to fill some gaps in the knowledge of three species from such lineages. A curious instance of a bee attempting to build brood cells using green pieces of plastic is among their findings.
Bee species with little known nesting-behavior observed to use plastic instead of leaves
Source: weird science