1. Ecological and demographic correlates of helping behaviour in a cooperatively breeding bird. (24th January 2013) Authors: Hatchwell, Ben J.; Sharp, Stuart P.; Beckerman, Andrew P.; Meade, Jessica; Wright, Jonathan Journal: Journal of animal ecology Issue: Volume 82:Number 2(2013:Mar.) Page Start: 486 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗