ponytug
Super Member
Straw diameters matter to certain bee species, and influence things like sex ratios, and success rates of emergence.I was very surprised reading that you should put a screen over a Mason Bee "hotel", while they are hibernating, so woodpeckers don't eat them. WE HAVE SERIOUS ISSUES WITH WOOD PECKERS 'ROUND HERE. I think my BIL has ill will towards me. He gave us his used little Bambeco house, but left out the Bamboo straws. Spent two hours making holes in untreated wood blocks to made my own. Then I looked up what a new one would cost with the straws..... $12.... He must be laughing at me right about now.
View attachment 860053
The impact of nest tube dimensions on reproduction parameters in a cavity nesting solitary bee, Osmia bicornis (Hymenoptera: Megachilidae) - Apidologie
Recent declines of bee populations have led to great interest in preserving bee species and fuel efforts to develop solitary species for pollination purposes. Xylophilous solitary bees can be easily reared in artificial nests tubes for commercial agricultural as well as wild plant pollination...
link.springer.com
All the best,
Peter