The BTO has carried out around 250 surveys since the 1930s. These are listed below in approximately reverse chronological order.
Linked to the name of the survey in the below is a full description including details of why the survey started, a summary of its results, its field methods, details of collaborators, organisers, publications and data all under a standard series of headings.
Most of the current surveys also have separate web pages and these are linked where they exist. These contain a variable amount of some but not all of the same information.
A list of surveys which covered any particular species or area is available here.
Continuing Surveys
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Ringing
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-- Constant Effort Sites
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-- Retrapping Adults for Survival
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-- Moult
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Nest Records Scheme
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-- Nestbox Challenge
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-- Barn Owl Monitoring Scheme
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Breeding Bird Survey (PDF, 79.67 KB)
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Waterways Breeding Bird Survey (PDF, 77.81 KB)
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Wetland Bird Survey -- Core Counts (PDF, 93.22 KB)
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-- Low Tide Counts (PDF, 90.24 KB)
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BirdTrack (PDF, 77.6 KB)
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Garden BirdWatch (PDF, 74.73 KB)
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Garden Bird Feeding Survey (PDF, 82.66 KB)
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Garden Nesting Survey (PDF, 78.95 KB)
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Heronries (PDF, 78.15 KB)
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Current Special Surveys
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Woodcock 2013 (PDF, 82.48 KB)
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Winter Thrushes
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Nightingale 2012
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House Martins (PDF, 60.63 KB)
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Hen Harrier Roosts 1985/86 -
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Large Scale completed Surveys
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Bird Atlas 2007-2011 (PDF, 81.34 KB)
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1988-1991 Breeding Atlas (PDF, 90.73 KB)
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1968-1972 Breeding Atlas (PDF, 83.18 KB)
1981/82-1983/84 Winter Atlas (PDF, 82.14 KB)
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Common Birds Census 1962-2000 (PDF, 87.11 KB)
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Waterways Bird Survey 1974-2007 (PDF, 77.53 KB)
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Ornithological Sites Register 1973-1977 (PDF, 70.16 KB)
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Completed Surveys 2005-2010
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International Golden Plover 2008 (PDF, 62.44 KB)
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Biodiversity in Glasgow 2007-08 (PDF, 71.91 KB)
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Ringed Plover 2007 (PDF, 100.82 KB)
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Little Ringed Plover 2007 (PDF, 87.41 KB)
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Lapwings in Plots 2007 (PDF, 74.38 KB)
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Non-Estuarine W'bird Survey 2 (NeWS II) 2006/07 (PDF, 70.87 KB)
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Winter Plovers 2006/07 (PDF, 71.09 KB)
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Ptarmigan 2006 (PDF, 76.31 KB)
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Dartford Warbler 2006 (PDF, 90.78 KB)
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Woodlark 2006 (PDF, 89.46 KB)
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Short-eared Owl 2006 (PDF, 75.81 KB)
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Surveys with Fieldwork started 2000-2005
Surveys with Fieldwork started 1990-1999
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Nightingale 1999 (PDF, 92.78 KB)
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Little Egret roosts 1999-2000 (PDF, 65.33 KB)
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Lapwing 1998 (PDF, 81.12 KB)
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Plover winter flocks 1998
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Farm Woods 1998-1999 (PDF, 63.92 KB)
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Game Cover Crops 1998/99-2000/01 (PDF, 80.48 KB)
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Non-Estuarine Coastal W'fowl in Europe 1997-1998 (PDF, 86.19 KB)
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Non-Estuarine W'bird Survey (NeWS) I 1997-1998 (PDF, 86.19 KB)
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Skylark wintering 1997/98 (PDF, 90.45 KB)
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Skylark breeding 1997 (PDF, 87.81 KB)
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Woodlark 1997 (PDF, 85.72 KB)
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Sawbills 1997 (PDF, 88.62 KB)
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Rooks 1996 (PDF, 84.66 KB)
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Set-Aside 1995-1997 (PDF, 84.78 KB)
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Project Barn Owl 1995-1997 (PDF, 92.17 KB)
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Farmland Buntings 1993 (PDF, 89.49 KB)
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Winter Gull Roosts 1993 (PDF, 79.7 KB)
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Organic Farming 1992-1995 (PDF, 82.63 KB)
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Corn Buntings wintering 1992/93 (PDF, 81.45 KB)
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Nightjar 1992 (PDF, 78.45 KB)
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Garden Bird Enquiry 1991-1994 (PDF, 64.68 KB)
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Peregrine 1991 (PDF, 77.07 KB)
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Mute Swan 1990 (PDF, 84.09 KB)
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