|Mason bee se-up while pollinating cherries.
Mason bee nests are made of routered channels cut out of compost board.
Boards are held together with a tie-strap.
|Osmia rufa doing the finishing touches to her nest.|
|Osmia rufa male. Note the long antennae.|
|Females resting over night inside their nesting tunnels.|
|Embrace (Osmia rufa)|