The British Trust for Ornithology
Apus apus
Swift © Chris Mead
Conservation Listings

Biodiversity Steering Group: Unlisted

Long term trend
UK: Unknown
Status Summary
Swifts were not monitored before in the inception of the BBS and the latter scheme shows large fluctuations in abundance since 1994. A long BBS time-series may therefore have to be accrued before definitive statements can be made about population trends. Concern for Swifts, a small organisation of private individuals, is trying to promote provision of nesting sites for this species as so many are being lost to development. It is also gathering information on populations to assess whether the species should be listed in the next Birds of Conservation Concern.
Table of population changes for Swift
Source Period
Years Plots
Alert Comment
BBS UK 6 1994-2000 848 -18 -25 -11    
BBS England 6 1994-2000 741 -19 -26 -11    
BBS Scotland 6 1994-2000 39 -50 -66 -26 (>50) Small sample
BBS Wales 6 1994-2000 53 -7 -36 33    
The Breeding Bird Survey is jointly funded by BTO, JNCC and RSPB
Productivity information is not currently available for this species

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This report should be cited as:
Baillie, S.R., Crick, H.Q.P., Balmer, D.E., Beaven, L.P., Downie, I.S., Freeman, S.N., Leech, D.I., Marchant, J.H.,
Noble, D.G., Raven, M.J., Simpkin, A.P., Thewlis, R.M. and Wernham, C.V.
(2002) Breeding Birds in the Wider
Countryside: their conservation status 2001. BTO Research Report No. 278. BTO, Thetford. (

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This page last updated: 21 April, 2008

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