Contents of report
Breeding Bird Survey
Common Birds Census
Constant Effort Sites
Nest Record Scheme
Waterways Bird Survey
Alerts
Summary
What the categories mean
Return to BTO Home Page
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COOT Fulica atra
 
Conservation Listings Long term trend

Unlisted/Green
Biodiversity Steering Group: Unlisted

UK: Moderate increase
 
Status Summary
Both WBS and CBC trends for Coot suggest consistent moderate increases since the early 1970s, a pattern replicated in winter abundance on large stillwaters, as monitored by WeBS (Pollitt et al. 2000).
 
 
Table of population changes for Coot
Source Period
(yrs)
Years Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
CBC all habitats 30 1968-1998 31 94 40 300   Unrepresentative?
  25 1973-1998 33 29 -9 119   Unrepresentative?
  10 1988-1998 32 12 -9 39   Unrepresentative?
  5 1993-1998 37 1 -16 18   Unrepresentative?
WBS waterways 23 1975-1998 39 63 4 200    
  10 1988-1998 49 16 -11 56    
  5 1993-1998 54 8 -5 32    
BBS UK 5 1994-1999 178 33 14 56    
BBS England 5 1994-1999 161 45 24 71    
The Breeding Bird Survey is jointly funded by BTO, JNCC and RSPB
 
 
Productivity information is not currently available for this species
 

 

   



The report should be cited as: Baillie, S.R., Crick, H.Q.P., Balmer, D.E., Bashford, R.I., Beaven, L.P., Freeman, S.N., Marchant, J.H., Noble, D.G., Raven, M.J., Siriwardena, G.M., Thewlis, R. and Wernham, C.V. (2001) Breeding Birds in the Wider Countryside: their conservation status 2000. BTO Research Report No. 252. BTO, Thetford. (http://www.bto.org/birdtrends)

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Last updated: 18 April, 2001

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