Movements of Some Granivorous Passerines in Winter on Farmland A Pilot Study Robertson D. Spiral / 2003 / Engelsk
Developing Methods for the Field Survey and Monitoring of Breeding Short-eared Owls (asio Flammeus) in the UK Final Report from Pilot Fieldwork in 2006 and 2007 Calladine John Spiral / 2008 / Engelsk
Raptor Species Conservation Frameworks The Peregrine Conservation Framework Project Progress Report: Phase 1 Humphreys L. Spiral / 2009 / Engelsk
