Bumblebee Nest Box designs that work

From George Pilkington's website, 'Nurturing Nature'

I know a couple of people who have been given bumblebee boxes for Christmas presents in an effort to support populations of bumblebees - all good stuff but neither of them had bumblebees take up residence....

Well I was recently sent a link to the website. 'Nurturing Nature' where two years of research shows why some of those boxes are not working and what does work - it is well worth a look to see how boxes can be made to encourage and support bumblebees....including cat flaps and improved bedding...

See: http://nurturing-nature.co.uk/bumblebee-nest-box/