The British Trust for Ornithology
CORMORANT
Phalacrocorax carbo
Cormorant © Colin Varndell
 
Conservation Listings

Unlisted/Green
Biodiversity Steering Group Conservation Concern List
  Long term trend
UK: Increasing
Shetland: Decreasing
 
Status Summary
The BBS indicates little change in Cormorant numbers over the past five years. The UK Seabird Monitoring Programme shows substantial increases in numbers breeding inland in England and in Northern Ireland between 1986-99 (Upton et al. 2000). However, numbers have fallen in Shetland by 5% per year over the same period.
 
 
Table of population changes for Cormorant
Source Period
(yrs)		 Years Plots
(n)		 Change
(%)		 Lower
limit		 Upper
limit		 Alert Comment
BBS UK 6 1994-2000 140 31 9 57    
BBS England 6 1994-2000 115 25 2 53    
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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