I’ve been unsuccessful ( [Update] – Found some! ) so far in my search for the Australian native Blue Banded Bee that is responsible for these Holes and Burrows in Sandstone. I found something else though! It’s another native Australian bee called the Teddy Bear Bee.
While in the garden I head a loud buzz coming from a bush. It was of low frequency and sounded like it belonged to something of decent size. After a short search I found it’s source, a single large chunky bee flying from flower to flower. It didn’t land and instead hovered briefly in front of one flower before moving to the next. It looked similar to a European honeybee but it was larger and chunkier. Despite several attempts I couldn’t get a sharp photo, below is the best of a bad bunch.
Teddy Bear bees are found in Eastern Australia ( possibly Australia wide) as well as New Guinea and the Aru Islands to the north. They are a solitary bee, females make a single nest in soil in places such as river banks and other sheltered locations.