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Breeding Bird Survey
Common Birds Census
Constant Effort Sites
Nest Record Scheme
Waterways Bird Survey
Alerts
Summary
What the categories mean
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GREENFINCH Carduelis chloris
 
Conservation Listings Long term trend

Unlisted/Green
Biodiversity Steering Group
Conservation Concern List

UK: Fluctuating, with no long-term trend.
 
Status Summary
Greenfinch abundance has varied little since the 1960s and there has been little change in either survival or breeding performance (Siriwardena et al. 1998b, 2000b). Both CBC and BBS indices indicate population increases across most of the UK in the 1990s, which have occurred despite recent declines in productivity (from the CES). The latter should be monitored because they could presage a future population decline. The trend towards earlier laying can be explained by recent climate change (Crick & Sparks 1999).
 
 
Table of population changes for Greenfinch
Source Period
(yrs)
Years Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
CBC all habitats 30 1968-1998 143 4 -21 27    
  25 1973-1998 145 3 -17 20    
  10 1988-1998 128 22 4 38    
  5 1993-1998 131 12 0 23    
CBC farmland 30 1968-1998 76 8 . .    
  25 1973-1998 75 7 . .    
  10 1988-1998 75 27 . .    
  5 1993-1998 76 15 . .    
CBC woodland 30 1968-1998 36 -2 . .    
  25 1973-1998 38 -2 . .    
  10 1988-1998 36 26 . .    
  5 1993-1998 37 12 . .    
CES adults 14 1984-1998 41 45 . .    
  10 1988-1998 46 -7 . .    
  5 1993-1998 52 -13 . .    
CES juveniles 14 1984-1998 23 -54 . . [>50*]  
  10 1988-1998 27 -57 . . [>50*]  
  5 1993-1998 30 -33 . . [>25]  
BBS UK 5 1994-1999 1227 20 13 27    
BBS England 5 1994-1999 1045 17 11 24    
BBS Scotland 5 1994-1999 79 30 0 68    
BBS Wales 5 1994-1999 70 23 -4 57    
BBS N.Ireland 5 1994-1999 24 83 -12 280   Small sample
The Breeding Bird Survey is jointly funded by BTO, JNCC and RSPB
 
 
Table of productivity information for Greenfinch
Variable Period
(yrs)
Years Mean
annual
sample
Trend Predicted
in first year
Predicted
in last year
Change Comment
Clutch size 30 1968-1998 97 None        
Brood size 30 1968-1998 116 None        
Daily failure rate (eggs) 30 1968-1998 134 None        
Daily failure rate (chicks) 30 1968-1998 100 None        
Laying date 30 1968-1998 99 Linear decline day 145 day 134 -11 days  
Percentage juveniles (CES) 14 1984-1998 45 Smoothed trend 279 productivity index 100 productivity index -64%[>50*]  
Percentage juveniles (CES) 10 1988-1998 52 Smoothed trend 215 productivity index 100 productivity index -54%[>50*]  
Percentage juveniles (CES) 5 1993-1998 57 Smoothed trend 142 productivity index 100 productivity index -29%[>25]  
 
   




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Last updated: 21 March, 2001

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