Authors: Sim, IMW Cross, AV Lamacraft, DL Pain, DJ

Citation: Imw. Sim et al., Correlates of common buzzard Buteo buteo density and breeding success in the West Midlands, BIRD STUDY, 48, 2001, pp. 317-329

Authors: Sim, IMW Gibbons, DW Bainbridge, IP Mattingley, WA

Citation: Imw. Sim et al., Status of the Hen Harrier Circus cyaneus in the UK and the Isle of Man in 1998, BIRD STUDY, 48, 2001, pp. 341-353

Authors: Sim, IMW Campbell, L Pain, DJ Wilson, JD

Citation: Imw. Sim et al., Correlates of the population increase of Common Buzzards Buteo buteo in the West Midlands between 1983 and 1996, BIRD STUDY, 47, 2000, pp. 154-164