Quote from The Australian Native Bee Book – page 28 “the males collected outside the nest may be smeared with resin. This may serve some function during courtship behaviour”. Photos of males roosting on branches. You can see resin on
nativebeehives.com is a project website with a focus on individual design and construction of Native Bee Hives, lots of photos, information about Australian native bees and also a news story thrown in around the place!