The British Trust for Ornithology
GREAT SPOTTED WOODPECKER
Dendrocopos major
Great Spotted Woodpecker © Colin Varndell
Conservation Listings

Unlisted/Green
Biodiversity Steering Group Conservation Concern List

Long term trend
UK: Rapid increase
Status Summary
This species increased rapidly in the 1970s and again in the late 1990s. The increase in the CBC trend in the 1990s is replicated in the BBS across most of the UK. The ecological factors underlying the increase are not yet known.
Table of population changes for Great Spotted Woodpecker
Source Period
(yrs)
Years Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
CBC all habitats 31 1968-1999 98 142 89 239    
  25 1974-1999 110 63 37 104    
  10 1989-1999 115 35 22 56    
  5 1994-1999 123 21 12 33    
CBC farmland 31 1968-1999 28 464 162 1068    
  25 1974-1999 31 125 39 284    
  10 1989-1999 34 86 40 147    
  5 1994-1999 35 59 32 83    
CBC woodland 31 1968-1999 58 57 14 118    
  25 1974-1999 65 35 6 66    
  10 1989-1999 74 20 6 36    
  5 1994-1999 79 11 2 20    
BBS UK 6 1994-2000 576 55 40 71    
BBS England 6 1994-2000 515 48 33 64    
BBS Wales 6 1994-2000 42 49 1 120   Small sample
The Breeding Bird Survey is jointly funded by BTO, JNCC and RSPB
Table of productivity information for Great Spotted Woodpecker
Variable Period
(yrs)
Years Mean
annual
sample
Trend Predicted
in first year
Predicted
in last year
Change Comment
Brood size 31 1968-1999 15 Curvilinear 3.12 chicks 2.6 chicks -0.52 chicks Small sample
Daily failure rate (chicks) 31 1968-1999 16 None       Small sample
Insufficient data on clutch size
available for this species
Insufficient data on egg nest failure
available for this species

 

Insufficient data on laying date
available for this species

 

 

Insufficient data on CES
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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This page last updated: 21 April, 2008

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