@flaflwrgrl : Oops!
Colour me embarrassed, I always forget to check where people are from! Doh. So ya, my comment is only valid in North America...
@Gleni: I am totally unfamiliar with what bees you would have in Australia. But I imagine a few species of bee over there would be similar cavity nesters.... Sounds like a very cool project, those do look like very cute bees! That's really cool to have a colonial bee that's stingless! (oh what I wouldn't give...and the price makes more sense now. Sounds like the edge of a new field of study/business/beekeeping) Maybe the price will come down in the future as more people get into keeping them?
@crittergarden : Yes, the term "naturalized" would be the appropriate one for honeybees in NA.
(Sorry if I seem to jump on people...thats a pet peeve of mine when they are switched...*deep breath*...) And the compost thing....I'm not sure. I would be worried they would get eaten by other insects (ants) or rodents, or just get to moist and get fungised. They could be just fine...but I worry. :P They emerge really early in my area (at least the ones in my reeds did) so by mid June they could be empty and go in the compost. But ya, after emergence for sure toss in the compost.