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HOUSE MARTIN Delichon urbica
 
Conservation Listings Long term trend

Unlisted/Green
Biodiversity Steering Group Conservation Concern List

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 30 1968-1998 22 12 -76 255    
  25 1973-1998 22 32 -66 326    
  10 1988-1998 21 14 -49 133    
  5 1993-1998 21 20 -21 78    
BBS UK 5 1994-1999 688 29 18 41    
BBS England 5 1994-1999 555 -2 -11 7    
BBS Scotland 5 1994-1999 41 375 198 657   Small sample
BBS Wales 5 1994-1999 67 104 53 173    
BBS N.Ireland 5 1994-1999 21 68 -15 233   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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Last updated: 6 February, 2001

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