The British Trust for Ornithology
HOUSE MARTIN
Delichon urbica
House Martin © Derek Belsey
 
Conservation Listings

Unlisted/Green
Biodiversity Steering Group Conservation Concern List
Long term trend
UK: Stable
 
Status Summary
The House Martin's colonial habits and tendency to nest in human settlements mean that it is not censused well by the CBC, so the stability apparent in the CBC trend should not be regarded as definitive. The BBS shows fluctuations or a shallow increase in recent years.
 
 
Table of population changes for House Martin
Source Period
(yrs)		 Years Plots
(n)		 Change
(%)		 Lower
limit		 Upper
limit		 Alert Comment
CBC all habitats 31 1968-1999 22 -42 -81 92    
  25 1974-1999 22 -33 -74 150    
  10 1989-1999 21 -2 -45 130    
  5 1994-1999 21 5 -23 60    
BBS UK 6 1994-2000 721 34 23 46    
BBS England 6 1994-2000 577 8 -2 18    
BBS Scotland 6 1994-2000 43 310 154 561   Small sample
BBS Wales 6 1994-2000 72 100 50 168    
BBS N.Ireland 6 1994-2000 24 129 28 313   Small sample
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. (http://www.bto.org/birdtrends)

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