Sheehy, EmmaSutherland, ChrisO’Reilly, CatherineLambin, Xavier2018-03-072018-03-072018-03-14Sheehy, E, Sutherland, C, O’Reilly, C & Lambin, X 2018, 'The enemy of my enemy is my friend : Native pine marten recovery reverses the decline of the red squirrel by suppressing grey squirrel populations ', Proceedings of the Royal Society of London. B, Biological Sciences, vol. 285, 20172603. https://doi.org/10.1098/rspb.2017.26030962-8452ORCID: /0000-0003-4643-2653/work/95222640http://hdl.handle.net/2164/10137Acknowledgements We thank Forest Enterprise Scotland and Trees for Life for support. Thanks also to the Scottish Wildlife Trust, E. Schulte, B. Priestly, K. Kortland, A. Jarrott, D. Anderson, T. Lightly, I. Cepukaite, S. Eastwood, M. Oliver, L. Currie, R. Greenwood, P. Whyatt, M. Hawkins, G. Neill, S. Willis, G. Stewart, I. Wilkinson, T. Ferrie, Luss Estates, Penicuik Estate, East and West Dunbartonshire Councils, Ballikinrain School and Dawyck Botanic Gardens.9526279engoccupancy modellingspatial capture recaptureapparent competitionpredator mediated competitionpest-regulating ecosystem servicespecies interactionsQH301 BiologySupplementary Datahttp://dx.doi.org/10.5061/dryad.478kp63QH301Journal article10.1098/rspb.2017.2603285