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This page lists the British Trust for Ornithology research reports 399 to 300.

BTO pages on the site

Breeding Bird Survey

Conservation advice notes

Research notes

Research Reports
- 692 to 600
- 599 to 500
- 499 to 400
- 399 to 300
- 299 to 200
- 199 to 100
- 99 to 1

BTO web site

The Effects On Waterbirds Of Dredging At The Cardiff Bay Barrage Report For 2004/05

N.H.K. Burton, S. Baylis, & S.J. Holloway

British Trust for Ornithology

2005

From the executive summary: "This study reports the impact of maintenance dredging on the birds utilising mudflats within and adjoining the outer harbour of the Cardiff Bay barrage using data collected in January and March 2005. Results are compared to those reported between 2002 and 2004."

The Status And Distribution Of The European Nightjar Caprimulgus europaeus In Britain In 2004

Gerry Conway and Ian Henderson

British Trust For Ornithology

2005

"During the summer of 2004, a UK-wide survey was conducted, by the British Trust for Ornithology, the Royal Society for the Protection of Birds, English Nature and Forestry Commission, to determine the population status and distribution of the Nightjar Caprimulgus Europaeus. The survey was based on two visits to sites (mainly 1-km squares) by volunteer observers. Professional ornithologists covered areas where volunteer coverage was low."

No report identified

British Trust for Ornithology

No report identified

British Trust for Ornithology

No report identified

British Trust for Ornithology

Development Of Methods For Surveying And Estimating Population Size Of Short-Eared Owls (Asio flammeus)

John Calladine, Humphrey Crick and Chris Wernham

British Trust for Ornithology

2005

From the summary: "The short-eared owl is listed on Annex 1 of the EU Wild Birds Directive and is a qualifying species for some classified Special Protection Areas. However, estimates of the breeding population of this species in the United Kingdom are considered to be unreliable and trends largely unknown. This report reviews available information (published literature and original data sources) required to make recommendations for developing and refining survey techniques for counting breeding short-eared owls."

Changes in Survival and Recruitment of Oystercatchers Haemotopus Ostralegus at Traeth Lafan, North Wales, in Relation to Shellfish Exploitation

Philip W. Atkinson

British Trust For Ornithology

2005

"Traeth Lafan is an area of intertidal sand and mud flats located in Conwy Bay, to the eastern end of the Menai Straits. Traeth Lafan is notified as a Special Protection Area (SPA) for its use as a severe weather refuge for oystercatchers. The SCAN ringing group has ringing data on the Traeth Lafan oystercatchers going back over 25 years. It is a valuable resource, collected by volunteers, which has not yet been analysed. The data will be used by this study for two aims: firstly to help us understand the changing oystercatcher populations at Traeth Lafan, relating this where possible to past management activities; and secondly to input survival data into the Centre for Ecology and Hydrology (CEH) study to model the shellfish requirements for the Traeth Lafan birds; a study which will inform future consents for shell fishery on the site."

No report identified

British Trust for Ornithology

No report identified

British Trust for Ornithology

No report identified

British Trust for Ornithology

No report identified

British Trust for Ornithology

Overwintering Waterbirds And Waterskiing At Dosthill Lake

Banks, A.N & Rehfisch, M.M

British Trust for Ornithology

2005

From the executive summary: "In relation to a planning application at Dosth ill Lake, Staffs., this report has three principal aims: (i) identify the questions remaining unanswered from the RPS Ecoscope (2004) report; (ii) review the published scientific literature, reporting on issues pertaining to waterbirds and waterskiing (plus related recreational pursuits); (iii) analyse Wetland Bird Survey (WeBS) data to assess the likelihood of trends at Dosthill Lake reflecting wider waterbird trends."

No report identified

British Trust for Ornithology

Lark Rise Farm, Barton, Cambs (Plot 1571) The Countryside Restoration Trust Report on Breeding Birds 2003

Glue, D & Carter, N

British Trust for Ornithology

2005

Introduction: "In Year 2003 a very fine annual census of the breeding bird community supported by Lark Rise Farm was completed for a fifth successive season. As in previous years, an ongoing crop rotation programme was maintained, with cereals as the dominant crop type with winter wheat and spring barley covering more than half the total area. There were also spring- and autumn-sown oilseed rape and grass cut for hay, as well as 5% natural regeneration, rotational set-aside and some woodland planting (see Appendix II, Habitat Summary Form). New hedge planting along the northern half of the eastern boundary, undertaken in autumn 2002, maintained an ongoing aim to improve cover for wildlife. An updated, colour Habitat Map, greatly enhanced the interpretative potential of the study."

No report identified

British Trust for Ornithology

The London Bird Project

Dan Chamberlain, Su Gough, Howard Vaughan, Graham Appleton, Steve Freeman, Mike Toms, Juliet Vickery, & David Noble

British Trust for Ornithology

2004

From the executive summary: "The distributions and population trends for several species are known reasonably well in Greater London and there are several studies that have considered the bird communities of London’s green spaces. Whilst our knowledge of London’s bird populations is good, we know relatively little about the factors that actually determine the presence and abundance of species within London’s parks, private gardens and other green spaces. A thorough assessment of habitat associations is needed if we are to improve the bird diversity of these green spaces. This can be achieved through analysis of bird data in conjunction with spatially referenced habitat data, the ultimate aim being the development of management recommendations."

No report identified

British Trust for Ornithology

Westfield Farm, Cambs (Plot 1572) Report on Breeding Birds 2003

Nick Carter & David Glue

British Trust for Ornithology

2004

From the introduction: "This was the second annual survey of the breeding birds of Westfield Farm, Comberton, Cambridgeshire, using a territory mapping methodology (Marchant et al. 1990). This survey followed a baseline survey in 2002 before any management practices were modified to benefit birds and other wildlife (Carter & Glue 2003)."

No report identified

British Trust for Ornithology

Indexing Winter Gull Populations In England, Wales, Scotland And Northern Ireland: An Analysis Of Data From The 1953 To 2004 Winter Gull Roost Surveys

Burton, N.H.K., Banks, A.N., Calladine, J.R., Austin, G.E., Armitage, M.J & Holloway, S.J

British Trust for Ornithology

2004

From the executive summary: "Since a first survey of gulls using inland roosts in England in January 1953, gulls have been counted at winter roost sites in England, and later in the rest of the UK, every 10 years. The latest survey covers the winters of 2003/04 to 2005/06 and aims to provide population estimates for the five main species that winter in the country: Black-headed Gull Larus ridibundus, Common Gull L. canus, Lesser Black-backed Gull L. fuscus, Herring Gull L. argentatus and Great Black-backed Gull L. marinus. In this report, we compare results obtained from roost sites surveyed in January 2004 with data from the same sites from earlier surveys in order to evaluate how wintering populations of these species have changed over the last five decades."

Thames Water overwintering and breeding bird indicators: feasibility study

Banks, A.N., Noble, D.G & Rehfisch, M.M

British Trust for Ornithology

200?

No report identified

British Trust for Ornithology

Investigation of methods for producing joint CBC-BBS trends

Noble, D.G., Newson, S.E & Joys, A.C

British Trust for Ornithology

200?

Scoping study on integrating Countryside Bird Survey and breeding Bird Survey data to generate All-Ireland trends

Newson, S.E., Crowe, O & Noble, D.G

British Trust for Ornithology

200?

Ornithological survey of a proposed windfarm site at Hill of Nigg

Chamberlain, D., Calladine, J & Harding, N

British Trust for Ornithology

200?

No report identified

British Trust for Ornithology

The ranging behaviour of some granivorous passerines in winter on farmland: Report for the second season Winter 2003/04

Calladine, J., Wernham, C & Robertson, D

British Trust for Ornithology

200?

No report identified

British Trust for Ornithology

Impacts of changes in sewage disposal on populations of waterbirds wintering on the Northumbrian coast Report for 2003/04

Burton, N.H.K., Goddard, A.P & Grant, A

British Trust for Ornithology

200?

No report identified

British Trust for Ornithology

The effect of climate change on bird species in the UK

Leech, D.I., Crick, H.Q.P & Rehfisch, M.M

British Trust for Ornithology

200?

Preliminary BBS-based habitat specific indicators for wild bird populations 1994-2002

Newson, S.E., Noble, D.G & Eaton, M.A

British Trust for Ornithology

200?

Analyses of Breeding Bird Survey mammal data 1995-2002

Newson, S & Noble, D

British Trust for Ornithology

200?

Marine monitoring project: ground and aerial monitoring protocols for inshore Special Protection Areas: extension Common Scoter surveys in Carmarthen Bay during the winters of 2002-03 and 2003-04

Banks, A., Bolt, D., Bullock, I., Haycock, B., Musgrove, A., Newson, S., Fairney, N., Sanderson, B., Schofield, R., Smith, L., Raylor, R & Whitehead, S

British Trust for Ornithology

200?

Changes in lowland wet grassland breeding wader numbers: the influence of site designation

Wilson, A., Pendlebury, C & Vickery, J

British Trust for Ornithology

200?

No report identified

British Trust for Ornithology

The Breeding Bird Survey 2003

Raven, M.J., Noble, D.G & Baillie, S.R

British Trust for Ornithology

2004

"The ninth annual report for the Breeding Bird Survey (BBS) allows us to look at the progress of the scheme over the past nine years, 1994-2003. We also present the survey coverage and bird population changes between the two most recent years, 2002-03. Data were collected from 2,254 squares in 2003, representing a massive effort from our volunteer fieldworkers and Regional Organisers (ROs). We would like to take this opportunity to thank everyone who has contributed to the success of the BBS."

Timing of breeding of moorland birds

Moss, D., Joys, A.C., Clark, J.A., Kirby, A., Smith, A., Baines, D & Crick, H.Q.P

British Trust for Ornithology

200?

South West London Waterbodies SPA Wildfowl Population Analysis

A.N. Banks, G.E. Austin, and M.M. Rehfisch

British Trust for Ornithology

2006

"The South West London Waterbodies SPA, which comprises seven SSSIs, is designated for internationally important numbers of wintering Gadwall and Shoveler. It also supports large numbers of Tufted Duck. This work looks at the numbers of these waterfowl, which have been suggested to decline across the SPA."

The effects on waterbirds of dredging at the Cardiff Bay Barrage Report for 2003/04

Holloway, S.J., Grantham, M.J., Collier, M.P & Burton, N.H.K

British Trust for Ornithology

200?

Statistical comparisons of waterbird site trends with regional and national trends for incorporation within the WeBS Alerts system

Banks, A.N & Austin, G.E

British Trust for Ornithology

200?

The use of pea crops by farmland birds: evidence for an extended breeding and enhanced feeding opportunities in crop mosaics

Henderson, I., Clark, N., Bodey, T., Holloway, S.J & Armitage, M

British Trust for Ornithology

200?

WBBS Progress report 2002-03

Marchant, J.H & Coombes, R.H

British Trust for Ornithology

200?

Comparison of London wild bird population trends with those in the surrounding area: update 1994-2002

Newson, S

British Trust for Ornithology

200?

Monitoring Methods for Non-Breeding Snipe

Sarah F. Jackson

British Trust For Ornithology

2004

"Accepting the requirement for accurate information regarding the status of Common and Jack Snipe populations in Great Britain, and the problems associated with conventional survey methods for secretive, largely nocturnal or crepuscular, rarely aggregating species with a preference for little observed habitat, this report presents and discusses a range of alternative survey methodologies taken from the literature. Survey methods discussed are: simple transects, nets and ringing, nocturnal surveys, calls and playback. Each alternative approach is discussed in relation to likely effectiveness and feasibility in relation to: time constraints, habitat characteristics, locating the birds and welfare issues."

Assessing the Impacts of Shell-fishing and Mussel Farming on Oystercatcher Populations in the Wash, England, Phase 1: Identification of Model Parameters to Be Refined

Clark et al

British Trust For Ornithology

2005

"This report describes behaviour-based models, and how an existing model has been used to predict the mortality rate of oystercatchers in the Wash. This model was able to distinguish between years of low and high oystercatcher mortality. Both predicted and observed mortality rates were low when shellfish were abundant, and high when shellfish were more rare. The model was also used to advise how shellfish stocks could be managed to maintain low oystercatcher mortality rates. However, the model does have some limitations and so the report describes the data that could be collected to increase confidence in the model's predictions."

No report identified

British Trust for Ornithology

Breeding periods for selected bird species in England

Joys, A.C & Crick, H.Q.P

British Trust for Ornithology

200?

Report On The Migration Of Red Knots Calidris Canutus Rufa And Turnstone Arenaria Interpres Passing Through Delaware Bay In 2003

N.A. Clark, P.W. Atkinson, J.A. Clark, S. Gillings & R. Robinson

British Trust For Ornithology

2004

A 40 page report.

No report identified

British Trust for Ornithology

No report identified

British Trust for Ornithology

Peregrine Survey validation exercise 2003

Wilson, A & Crick, H

British Trust for Ornithology

200?

Reviewing the impact of Agency Permissions and activities on bird populations in Special Protection Areas: Level 2 interpretation.

Burton, N

British Trust for Ornithology

200?

No report identified

British Trust for Ornithology

Comparison of population trends, abundance and species richness on land affected by SRDP agri-environment schemes with non-agreement land

Newson, S & Noble, D

British Trust for Ornithology

200?

Using adult/juvenile ratios of waders in winter cannon net catches in Britain & Ireland to measure recruitment

Clark, J.A., Clark, N.A., Robinson, R.A & Atkinson, P.W

British Trust for Ornithology

200?

The effect of the Cardiff Bay Barrage on waterbird populations - final report

Burton, N.H.K., Rehfisch, M.M & Clark, N.A

British Trust for Ornithology

200?

Gardens as a winter feeding refuge for declining farmland birds

Chamberlain, D.E., Vickery, J.A., Glue, D.E & Conway, G

British Trust for Ornithology

200?

The BTO Barn Owl Monitoring Programme: Third Year 2002

D.I. Leech, J.H. Marchant, L.P. Beaven & H.Q.P. Crick

British Trust for Ornithology

2003

The BTO Barn Owl Monitoring Programme (BOMP) was set up in 2000 with the aim: to monitor Barn Owl populations through standardised recording of nest occupancy rates, breeding performance and survival at a set of Barn Owl nest sites broadly representative of the Barn Owl in Britain. This report summarises the findings following the third year of the programme.

Westfield Farm, Cambs (Plot 1572) The Countryside Restoration Trust report on breeding birds 2002

Carter, N & Glue, D

British Trust for Ornithology

200?

Designing crop/plant mixtures to provide food for seed-eating farmland birds in winter

Boatman, N.D., Stoate, C., Henderson, I.G., Vickery, J.A., Thompson, P.G.L & Bence, S.L

British Trust for Ornithology

200?

Towards determining the causes of declines in waterbird numbers on the Stour and Orwell estuaries SPA

Armitage, M.J.S, Austin, G.E., Ravenscroft, N.O.M & Rehfisch, M.M

British Trust for Ornithology

200?

Analysis of population trends for waterways birds: a comparison of Waterways Bird Survey indices

Newson, S.E., Noble, D.G & Marchant, J.H

British Trust for Ornithology

200?

Marine Monitoring Project: ground and aerial monitoring protocols for in-shore Special Protection Areas: Common Scoter surveys in Carmarthen Bay during the winter of 2002-03

Musgrove, A., Newson, S., Fairney, N., Sanderson, B & Whitehead, S

British Trust for Ornithology

200?

Low-tide distribution of waterbirds on the Severn estuary SPA: results of the 2002-03 WeBS Low Tide Counts and a historical analysis

Burton, N.H.K., Marchant, J.H., Musgrove, A.J., Armitage, M.J.S., Holloway, S.J & Phillips, J

British Trust for Ornithology

200?

The Breeding Bird Survey 2002

Raven, M.J., Noble, D.G & Baillie, S.R

British Trust for Ornithology

2003

"The eighth annual report for the Breeding Bird Survey (BBS) allows us to look at the progress of the scheme over the past eight years, 1994-2002. We have also detailed the changes from the most recent years, 2000-2002. Data for 2001 have not been included in the long-term trends because in that year access restrictions imposed by the outbreak of Foot & Mouth Disease caused sampling bias. Data were collected from 2,136 squares representing a massive effort from our volunteer fieldworkers and Regional Organisers (ROs). We would like to take this opportunity to thank everyone who has contributed to the success of the BBS."

The value and management of waste water treatment works for breeding and wintering birds in lowland eastern England

Gough,S., Gillings, S & Vickery, J.A

British Trust for Ornithology

200?

Baseline bird survey of Milton Glen, Stirling

Calladine, J

British Trust for Ornithology

200?

Lappel Bank and Fagbury Flats compensatory measures site suitability for waterbirds: Phase 1 extension

Banks, A.N., Burton, N.H.K., Musgrove, A.J & Rehfisch, M.M

British Trust for Ornithology

200?

The Peregrine Falcon Breeding Population of the UK and Isle of Man in 2002

A.N. Banks

BTO, The National Centre for Ornithology

2003

Historical, contemporary and prospective breeding territories of the Peregrine Falcon in the UK and Isle of Man were surveyed during the breeding season of 2002 by volunteer and professional fieldworkers. This 48 page report summarises the findings of the survey.

Breeding wader populations in the Severn & Avon Vales Natural Area in 2002

Wilson, A & Smart, M

British Trust for Ornithology

200?

Impacts of Grey Squirrels on woodland birds: an important predator of eggs and young?

Hewson, C.M & Fuller, R.J

British Trust for Ornithology

200?

The movements of some granivorous passerines in winter on farmland: a pilot study

Calladine, J., Robertson, D & Wernham, C

British Trust for Ornithology

200?

Effects of reductions in organic and nutrient loading on bird populations in estuaries and coastal waters of England and Wales

Burton, N.H.K., Jones, T.E., Austin, G.E., Watt, G.A., Rehfisch, M.M & Hutchings, C.J

British Trust for Ornithology

200?

2002-03 Pilot Winter Gull Roost Survey (including preliminary details of 2003-04 full winter gull roost survey)

Austin, G.E., Armitage, M.J.S., Burton, N.H.K., Fuller, R.A., Holloway, S.J., Musgrove, A.J., Rehfisch, M.M & Willis, S.G

British Trust for Ornithology

200?

An investigation of the effectiveness of rehabilitation of birds as shown by ringing recoveries

Joys, A.C., Clark, J.A., Clark, N.A & Robinson, R.A

British Trust for Ornithology

200?

Phenology of autumn passage of Willow Warblers at Dungeness: 1960-2000

Marchant, J.H & Wernham, C.V

British Trust for Ornithology

200?

Waterways Breeding Bird Survey: progress report for 2001-2002

Marchant, J.H & Noble, D.G

British Trust for Ornithology

200?

Preliminary analysis of Breeding Bird Survey (BBS) mammal data

Newson, S.E & Noble, D.G

British Trust for Ornithology

200?

Importance of geographical location and local habitat features for species abundance: analyses using BBS data

Freeman, S.N., Noble, D.G., Newson, S.E & Baillie, S.R

British Trust for Ornithology

200?

The numbers and status of waterbirds using Cardiff Bay from 1999/2000 - 2002/2003

Holloway, S.J., Clark, N.A & Burton, N.H.K

British Trust for Ornithology

200?

Producing statistically valid maps of species abundance from UK Breeding Bird Survey counts using Geostatistical Analyst in ArcGIS

Newson, S.E & Noble, D.G

British Trust for Ornithology

200?

Evaluation of species coverage and precision using the BBS indexing method

Joys, A.C., Noble, D.G & Baillie, S.R

British Trust for Ornithology

200?

Lark Rise Farm, Barton, Cambs (Plot 1571) The Countryside Restoration Trust Report on breeding birds 2002

Glue, D & Carter, N

British Trust for Ornithology

200?

No report identified

British Trust for Ornithology

The effects on waterbirds on dredging at the Cardiff Bay Barrage Report 2002/03

Burton, N.H.K., Holloway, S.J & Clark, N.A

British Trust for Ornithology

200?

The Colworth Sustainable Project The response of birds, invertebrates and plants to crop structure and management manipulations on arable farmland

Henderson, I., Ravenscroft, N., Clark, N & Holloway, S

British Trust for Ornithology

200?

Birds Eye Wall's: Partnership for Sustainability Progress report on the use of pea fields by birds

Henderson, I.G

British Trust for Ornithology

200?

No report identified

British Trust for Ornithology

No report identified

British Trust for Ornithology

The effects on waterbirds of dredging at the Cardiff Bay Barrage Report for April to December 2002

Burton, N.H.K., Holloway, S.J & Clark, N.A

British Trust for Ornithology

200?

Red Knots Calidris Canutus in Delaware Bay 2002: Survival, Foraging and Marking Strategy

P.W. Atkinson

British Trust For Ornithology

2003

A 40 page report.

Arrival and Weight Gain of Red Knot Calidris Canutus, Ruddy Turnstone Arenaria Interpres and Sanderling Calidris Alba Staging in Delaware Bay in Spring

R.A. Robinson, P.W. Atkinson, and N.A. Clark

British Trust For Ornithology

2003

A 50 page report which analyses patterns of weight gain in three species of shorebirds over a six year period between 1997 and 2002. Birds were caught in May of each year on both the Delaware and New Jersey sides of the Bay using cannon nets.

No report identified

British Trust for Ornithology

Update on waterbird population on the River Wharfe

Joys, A.C & Marchant, J.H

British Trust for Ornithology

200?

The role of birds as a potential source of bacterial contamination along the Blackpool shoreline - Year 2 (2002)

Holloway, S.J., Armitage, M.J.S & Mellan, H.J

British Trust for Ornithology

200?

Modelling bird population changes using data from the Common Birds Census and the Breeding Bird Survey

Freeman, S.N., Noble, D.G., Newson, S.E & Baillie, S.R

British Trust for Ornithology

200?

Assessing the Effects of Scaring Starlings Roosting on Blackpool Piers

J.R. Blackburn, S.J. Holloway & M.M. Rehfisch

British Trust for Ornithology

2002

"Evidence has shown that birds maybe a possible source for contaminants found off the Blackpool coastline as they are known to act as carriers of Salmonella and Streptococci. Research work was carried out in 2001 (Holloway et al. 2002) to investigate the possible origin of such contaminants and has been continued in 2002. It was suspected that Starling (Sturnus vulgaris) might be a possible source of the contamination. Anecdotal information suggested that "tens of thousands" of Starlings roosted on the piers at Blackpool in the late summer and early autumn, thereby generating considerable amounts of faecal material. Observations and data collected in 2001 confirmed that large numbers of Starlings roosted on the piers. Large, regular Starling roosts are known to damage plantation trees by either breaking small branches by the sheer weight of the roosting birds and/or smothering all the surfaces with a thick coating of uric acid, which can also kill the tree (Feare 1984). Large roosts on building scan cause pitting of lime containing stonework, as the calcium carbonate content is dissolved by the acidic nature of the faeces. In order to assess the significance of the roosting Starlings as a potential source of contaminants, a scaring procedure was instigated by Environment Agency to shift the Starlings from the piers. Data were collected on numbers of birds and the water quality before, during and after the scaring in order to assess the success of the operation

The numbers and status of waterbirds using Cardiff Bay from 1999/2000 - 2001/2002

Burton, N.H.K & Clark, N.A

British Trust for Ornithology

200?

Pilot work to assess bird occurrence and abundance on BBS squares within ESAs

Noble, D & Newson, S

British Trust for Ornithology

200?