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GREAT SPOTTED WOODPECKER
Dendrocopos major
 
Conservation Listings Long term trend

Unlisted/Green
Biodiversity Steering Group Conservation Concern List

UK: Rapid increase
 
Status Summary
This species increased rapidly in the 1970s but has been more stable subsequently. The more shallow 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 30 1968-1998 97 118 74 214    
  25 1973-1998 107 62 32 98    
  10 1988-1998 112 21 9 34    
  5 1993-1998 122 12 3 21    
CBC farmland 30 1968-1998 27 344 . .    
  25 1973-1998 30 101 . .    
  10 1988-1998 32 44 . .    
  5 1993-1998 34 30 . .    
CBC woodland 30 1968-1998 58 47 . .    
  25 1973-1998 64 34 . .    
  10 1988-1998 72 13 . .    
  5 1993-1998 79 5 . .    
BBS UK 5 1994-1999 543 42 28 58    
BBS England 5 1994-1999 487 38 24 54    
BBS Wales 5 1994-1999 39 30 -13 95   Small sample
The Breeding Bird Survey is jointly funded by BTO, JNCC and RSPB
 
 
Table of productivity information for Gt Spotted Woodpecker
Variable Period
(yrs)
Years Mean
annual
sample
Trend Predicted
in first year
Predicted
in last year
Change Comment
Brood size 30 1968-1998 14 Curvilinear 3.14 chicks 2.73 chicks -0.41 chicks Small sample
Daily failure rate (chicks) 30 1968-1998 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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Last updated: 7 February, 2001

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