Build your own bee log

The BBC's Wiltshire web site has a feature on building your own home for solitary bees. It is simple to set up as it involves drilling 8mm holes randomly onto a log and placing it somewhere warm. I have already done something similar in my own garden with a 5ft length of crab-apple wood. I can't claim any success yet, though I should really give it a close inspection to check if there are any hibernating insects there. I might think about resiting my log somewhere warmer to make it more attractive. It is currently in a shady and possibly damp corner at the moment, but there is a lot of competition for the sunnier spots.