Here is some info on Mason Bees (Blue Orchard Bees)
Below are links that are helpful.
Mason Bees
Bee Diverse Mason bee houses, orchard mason bee and blue
orchard bee.
Pollinating
Insect-Biology, Management, Systematics Research : Build a Nesting Block
Agricultural bee-nesting tubes
Knox Cellars Native Pollinators
Bees 2000-2001
Suppliers of Pollen Bees
Pollinator
Paradise
Management of Hornfaced Bees for Orchard Pollination
Solitary Bees: An Addition to Honey Bees
The hornfaced bee, Osmia cornifrons, and the blue orchard
bee, or orchard mason bee, Osmia lignaria, are pollinators of fruit trees. This
site gives information on rearing bees, bee supplies, pollination, and other
sites of interest.
Product Descriptions
Mites
on Mason Bees
Popular article about Krombein's Hairy-Footed Mite, a pest of
the Orchard Mason Bee, and its control in the Seattle, Washington area.
Non-Apis
Bee Vendors
Insect Note 109
Entomo-Logic Home