Contents of report
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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BULLFINCH Pyrrhula pyrrhula
 
Conservation Listings Long term trend

Table 3/Red
(>=50% Population decline)

Biodiversity Steering Group Priority Species List

UK: Rapid decline over past 25 years
Farmland: Rapid decline
Woodland: Moderate decline
 
Status Summary
The UK Bullfinch population has been in decline since the mid-1970s, following a period of relative stability. The decline was initially rapid, but has been shallower since the early 1980s. Nevertheless, the CES and BBS suggest that the decline is continuing, at least in southern Britain, but the demographic mechanism remains unclear (Siriwardena et al. 1999, 2000b); however, agricultural intensification is suspected to have played a part. CES productivity has increased over the last decade, and nest failure rates at the chick stage (15 days) have declined from 38% down to 21%.
 
 
Table of population changes for Bullfinch
Source Period
(yrs)
Years Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
CBC all habitats 30 1968-1998 137 -50 -59 -40 >25  
  25 1973-1998 140 -56 -64 -48 >50  
  10 1988-1998 117 -13 -22 -5    
  5 1993-1998 121 -6 -14 1    
CBC farmland 30 1968-1998 49 -64 -76 -51 >50  
  25 1973-1998 48 -70 -79 -59 >50  
  10 1988-1998 40 -18 -34 2    
  5 1993-1998 40 -1 -16 19    
CBC woodland 30 1968-1998 59 -38 -52 -22 >25  
  25 1973-1998 63 -44 -59 -30 >25  
  10 1988-1998 61 -11 -24 1    
  5 1993-1998 64 -8 -17 -1    
CES adults 14 1984-1998 81 -14 . .    
  10 1988-1998 92 -18 . .    
  5 1993-1998 97 -4 . .    
CES juveniles 14 1984-1998 63 12 . .    
  10 1988-1998 71 22 . .    
  5 1993-1998 76 21 . .    
BBS UK 5 1994-1999 432 -28 -37 -19 (>25)  
BBS England 5 1994-1999 340 -28 -38 -18 (>25)  
BBS Scotland 5 1994-1999 29 73 -3 208   Small sample
BBS Wales 5 1994-1999 43 -50 -66 -26 (>50) Small sample
The Breeding Bird Survey is jointly funded by BTO, JNCC and RSPB
 
 
Table of productivity information for Bullfinch
Variable Period
(yrs)
Years Mean
annual
sample
Trend Predicted
in first year
Predicted
in last year
Change Comment
Clutch size 30 1968-1998 36 None        
Brood size 30 1968-1998 39 None        
Daily failure rate (eggs) 30 1968-1998 52 None        
Daily failure rate (chicks) 30 1968-1998 35 Linear decline 0.0309 nests/day 0.016 nests/day -0.0149 nests/day  
Laying date 30 1968-1998 34 None        
Percentage juveniles (CES) 14 1984-1998 85 Smoothed trend 88 productivity index 100 productivity index 13%  
Percentage juveniles (CES) 10 1988-1998 96 Smoothed trend 69 productivity index 100 productivity index 45%  
Percentage juveniles (CES) 5 1993-1998 101 Smoothed trend 81 productivity index 100 productivity index 24%  
 
   


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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