Action: Conserve old buildings or structures as nesting sites for bees
- We found no evidence for the effects of conserving old buildings and structures suitable for nesting wild bees.
'No evidence' for an action means we have not yet found any studies that directly and quantitatively tested this action during our systematic journal and report searches. Therefore we have been unable to assess whether or not the action is effective or has any harmful impacts. Please get in touch if you know of such a study for this action.