Publications for Dr Ron Summers
BIRDS
- Date
- 29 November 1994
- RSPB Authors
- Dr Ron Summers
- Authors
- Minns, D. W., Summers, R.W. & Galbraith, C.A.
- Published in
- Fresh Waters of Scotland: A National Resource of International Significance
Breeding of waders (Charadrii) and brent geese Branta bernicla bernicla at Pronchishcheva Lake, northeastern Taimyr, Russia, in a peak and a decreasing lemming year
During summer 1991, lemmings occurred at high densities in Arctic tundra at Pronchishcheva Lake in the northeastern Taimyr Peninsula, whereas, in 1992, lemming densities were substantially lower
- Date
- 01 January 1993
- RSPB Authors
- Dr Ron Summers
- Authors
- Underhill, L. G. and colleagues
- Published in
- Ibis
Capercaillie Tetrao urogallus nest loss and attendance at Abernethy Forest, Scotland
Improvement of breeding Success is key to capercaillie Tetrao urogallus conservation in Scotland. However, factors affecting breeding success are not fully understood, including the cause of nest loss...
- Date
- 01 September 2009
- RSPB Authors
- Dr Ron Summers
- Authors
- Summers, R.W., Willi, J. & Selvidge, J.
- Published in
- Wildlife Biology
Correlates of breeding success of horned grebes in Scotland
A study was carried out on breeding Horned (Slavonian) Grebes (Podiceps auritus) in Scotland to investigate causes of low breeding success. Clutch and brood survival were examined separately, as well...
- Date
- 01 June 2009
- RSPB Authors
- Dr Ron Summers, Dr Mark Hancock
- Authors
- Summers, R.W., Mavor, R.A. & Hancock, M.H.
- Published in
- Waterbirds
Abundance and distribution of capercaillie
The capercaillie Tetrao urogallus L. is a cryptic forest gamebird which has decreased in Scotland, as in much of its range, since the 1970s. Despite previous surveys of the bird's range in Scotland, t...
- Date
- 01 January 1998
- RSPB Authors
- Dr Ron Summers
- Authors
- Catt, D. C. and colleagues
- Published in
- Biological Conservation
Abundance of crossbills, siskins and cone-crops
We present a more complete and definitive analysis than hitherto of the long runs of data on crossbill abundance and cone-crops in Finland and in Scotland. The abundance of Common Crossbills Loxia cur...
- Date
- 01 March 2009
- RSPB Authors
- Dr Ron Summers
- Authors
- Watson, A., Marquiss, M. & Summers, R.
- Published in
- Ornis Fennica
Do multiple herbivores maintain chemical diversity of Scots pine monoterpenes?
A central issue in our understanding of the evolution of the diversity of plant secondary metabolites (PSMs) is whether or not compounds are functional, conferring an advantage to the plant, or nonfunctional...
- Date
- 12 May 2011
- RSPB Authors
- Dr Ron Summers
- Authors
- Iason, G.R., O'Reilly-Wapstra, J.M., Brewer, M.J., Summers, R.W. & Moore, B.D.
- Published in
- Philosophical Transactions of the Royal Society B-Biological Sciences
Post-hatch nest use by Slavonian Grebes in Scotland
- Date
- 01 January 2008
- RSPB Authors
- Dr Ron Summers, Dr Mark Hancock
- Authors
- Dillon, I.A., Hancock, M. & Summers, R. W.
- Published in
- British Birds
Provisioning of Slavonian grebe Podiceps auritus chicks at nests in Scotland
Slavonian Grebe nests are used as a focal point for feeding chicks in the early stages of growth, with considerable variation in feeding rates diurnally and across the duration of post-hatch nest use. Slavonian Grebes Podiceps auritus nest...
- Date
- 14 December 2010
- RSPB Authors
- Dr Mark Hancock, Dr Ron Summers
- Authors
- Dillon, I.A., Hancock, M.H. & Summers, R.W.
- Published in
- Bird Study
Seasonal, size- and age-related patterns in body-mass and composition of Purple Sandpipers
The masses of 3229 Purple Sandpipers Calidris maritima from Britain were analysed for differences related to age, season and size. First-year birds were lighter by 2 g. There was only a slight increas...
- Date
- 01 January 1992
- RSPB Authors
- Dr Ron Summers
- Authors
- Summers, R. W. and colleagues
- Published in
- Ibis