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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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