John is responsible for managing, developing and undertaking research projects relevant to Scotland, in particular the development of BTO Scotland’s portfolio of studies related to forest and moorland management.
Interests & Responsibilities
- Direct and extensive experience of working on a range of applied conservation research and survey projects.
- Extensive experience of interpreting survey results and reviewing for applied conservation purposes.
- Involvement with practical land management issues and how they influence nature conservation interests.
Recent and current studies include: (i) long-term monitoring associated with moorland management; (ii) the bird communities in new native-type woodlands; (iii) bird-habitat relationships and the influence of restructuring the interface between conifer plantations and moorland and other aspects of plantation management; (iv) the development of survey methods for the monitoring of Short-eared Owls and for birds of alpine habitats in Scotland; (v) bird communities in short-rotation forestry energy crops; (vi) population changes in breeding waders on machair; (vi) reviews of the populations of predatory birds and the ecology of urban gulls in Scotland; (vii) studies on the winter ecology of some seed-eating birds; and (viii) studies on upland habitat selection by breeding Whinchats.
An active bird ringer Honorary Lecturer in the School of Biological & Environmental Sciences, University of Stirling (since 2005)
Recent BTO Publications
Calladine, J. 2004. Lesser Black-backed Gull. pp 226-241 in: Mitchell, P.I, Newton, S.F., Ratcliffe, N. & Dunn, T.E. (eds) Seabird Populations of Britain and Ireland. T.& A.D. Poyser, London.
Calladine, J., Baines, D. & Warren, P. 2002. Effects of reduced grazing on population density and breeding success of black grouse Tetrao tetrix in northern England. Journal of Applied Ecology 39: 772-780.
Calladine, J., Buner, F. & Aebischer, N.J. 1999. Temporal variations in the singing activity and detection efficiency of Turtle Doves Streptopelia turtur: implications for surveying. Bird Study 46: 74-80.
Calladine, J. 1997. A comparison of Herring Gull Larus argentatus and Lesser Black-backed gull Larus fuscus nest sites: their characteristics and relationships with breeding success. Bird Study 44: 318-326.
Calladine, J. 1997. The detection efficiency of color-banded Herring Gulls Larus argentatus and Lesser Black-backed Gulls Larus fuscus at the breeding colony: practical implications for the determination of adult survival rates. Colonial Waterbirds 20: 41-46.
Calladine, J. & Harris, M.P. 1997. Intermittent breeding in the Herring Gull Larus argentatus and the Lesser Black-backed Gull Larus fuscus. Ibis 139: 259-263
Calladine, J., Harris, M.P., Taylor, S. & Wanless, S. 1995. The status of the Eider on the Isle of May and other Forth islands. Scottish Birds 18: 1-10.
Harris, M.P. & Calladine, J. 1993. A check of the efficiency of finding colour-ringed Kittiwakes Rissa tridactyla. Ringing and Migration 14: 13-116.
Calladine, J., Dougill, S., Harding, N. & Stroud, D.A. 1990. Moorland birds on the Campsie Fells, Touch Hills and west Ochill Hills, Stirling: Habitats, distribution and numbers. Forth Naturalist and Historian 13: 3-69.