In a message dated 2/6/01 2:17:04 PM Pacific Standard Time, [log in to unmask] writes: << Does anyone have experience of mason bees (Osmia spp)? I'm aware that trap nests are commercially available, and that they can be used for pollination. I'm interested in using them at an urban site in the UK, and I'd be grateful for any pointers. >> There's lots of resources at: http://pollinator.com/alt_pollinators.htm Dave Green The Pollination Home Page: http://pollinator.com