Publications for Derek Gruar

Summer diet and body condition of song thrushes Turdus philomelos in stable and declining farmland populations

Summer diet and body condition were compared in two farmland Song Thrush Turdus philomelos populations in south-east England. One population on mixed farmland was stable and the other on arable farmland...

Date
01 January 2003
RSPB Authors
Derek Gruar, Dr Will Peach
Authors
Gruar, D. and colleagues
Published in
Ibis
View publication Details
Song thrush England Agriculture UK species

Summer utilization of oilseed rape by reed buntings Emberiza schoeniclus and other farmland birds

Oilseed Rape was the preferred breeding season habitat for Reed Buntings on arable farmland and reduced this species' dependence on wet features. To identify preferred breeding

Date
01 January 2006
RSPB Authors
Derek Gruar, Dr Will Peach
Authors
Gruar, D., Barritt, D. & Peach, W.J.
Published in
Bird Study
View publication Details
Reed bunting England Agriculture UK species

Habitat selection by song thrushes in stable and declining farmland populations

Losses of farmland birds from the wider countryside have become a major conservation issue in the UK and Europe. Song thrush Turdus philomelos populations in lowland rural Britain declined by approximately...

Date
07 April 2004
RSPB Authors
Derek Gruar, Dr John Mallord, Dr Will Peach
Authors
Peach, W.J., Denny, M., Cotton, P.A., Hill, I.F., Gruar, D., Barritt, D., Impey, A. & Mallord, J.
Published in
Journal of Applied Ecology
View publication Details
Song thrush England Agriculture UK species

Land-use correlates of breeding performance and diet in tree sparrows Passer montanus

Chick diet varies seasonally and between wet and dry habitats, and there is little evidence for a link between habitat type and productivity. Aim To examine the influence of habitat compositio...

Date
01 September 2008
RSPB Authors
Dr Rob Field, Dr Guy Anderson, Derek Gruar
Authors
Field, R.H., Anderson, G.Q.A. & Gruar, D.J.
Published in
Bird Study
View publication Details
Tree sparrow UK Agriculture UK species

Development of an agri-environment option through research trials: Skylark plots at Hope farm

The UK skylark population has declined by 53% between 1970–2007. Previous research has shown that the structure of autumn sown crops curtails the breeding season, producing insufficient fledglings for...

Date
01 May 2010
RSPB Authors
Derek Gruar, Dr Tony Morris
Authors
Gruar, D.J., Morris, A.J., Bailey, C.M. & Dillon, I.A.
Published in
Aspects of Applied Biology
View publication Details
Skylark England Agriculture UK species

Pre-breeding foraging and nest site habitat selection by lesser spotted woodpeckers

Lesser Spotted Woodpeckers Dendrocopos minor have dramatically declined and retracted in range in Britain. Pre-breeding foraging may be critical and, although work has been carried out elsewhere in ...

Date
01 September 2012
RSPB Authors
Derek Gruar, Stephen Dodd
Authors
Charman, E.C., Smith, K.W., Dodd, S., Gruar, D.J. & Dillon, I.A.
Published in
Ornis Fennica
View publication Details
Lesser spotted woodpecker England UK species

Drivers of population increase on an arable farm delivering a comprehensive suite of measures for farmland birds

In 1999, the RSPB purchased Hope Farm near Cambridge, a site with a simple arable crop rotation and a typical associated avian fauna. Since acquisition, the number of breeding territories of the Government’s “Quality of Life Farmland Bird...

Date
01 January 2010
RSPB Authors
Dr Tony Morris, Derek Gruar
Authors
Morris, A.J., Bailey, C.M., Winspear, R., Gruar, D.J. & Dillon, I.A.
Published in
Aspects of Applied Biology
View publication Details
England Agriculture

Evidence of interspecific egg-dumping between tit species

Date
01 January 2009
RSPB Authors
Derek Gruar
Authors
Gruar, D.
Published in
British Birds
View publication Details
Scotland UK species

Can hedgerow management mitigate the impacts of predation on songbird nest survival?

Nest predators can have significant impacts on songbird reproductive success. These impacts may be amplified by habitat simplification and here we test whether sympathetic management of farmland hedgerows can reduce nest...

Date
01 December 2016
RSPB Authors
Dr Jenny Dunn, Derek Gruar, Dr Will Peach
Authors
Dunn, J.C., Gruar, D., Stoate, C., Szczur, J. & Peach, W.J.
Published in
Journal of Environmental Management 184: 535-544.
View publication Details
UK Agriculture UK species

Understanding the causes of decline in breeding bird numbers in England: a review of the evidence base for declining species in the woodland indicator for England.

The project will compare bird abundance data with land cover data, from habitat inventories and from the land cover map. It will assess the importance of different habitat types and their availability within the landscape in determining...

Date
01 January 2009
RSPB Authors
Derek Gruar
Authors
Charman, E.C., Carpenter, J. & Gruar, D.
View publication Details
UK UK species Woodland