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BULLFINCH
Pyrrhula pyrrhula

Bullfinch © Tommy Holden
Conservation listings

Europe: no SPEC category, secure
UK: Red
(>50% population decline)

Long-term trend
UK, England: rapid 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 very steep, but has been shallower since the early 1980s. Nevertheless, the CES and CBC/BBS both suggest that the decline is continuing, at least in southern Britain. The demographic mechanism remains unclear (Siriwardena et al. 1999, 2000b), although agricultural intensification is suspected to have played a part. CES data indicate that productivity has increased over the last decade. However, nest failure rates at the egg stage have risen through the 1990s.
CBC/BBS UK graph
Table of population changes for Bullfinch
Source Period
(yrs)
Years Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
CBC/BBS UK 33 1967-2000 224 -54 -64 -47 >50  
  25 1975-2000 256 -60 -67 -52 >50  
  10 1990-2000 394 -17 -24 -9    
  5 1995-2000 562 -19 -25 -13    
CBC/BBS England 33 1967-2000 188 -55 -66 -42 >50  
  25 1975-2000 212 -61 -70 -52 >50  
  10 1990-2000 317 -18 -29 -11    
  5 1995-2000 444 -16 -24 -11    
CES adults 17 1984-2001 80 -25 . . [>25]  
  10 1991-2001 91 -19 . .    
  5 1996-2001 89 -16 . .    
CES juveniles 17 1984-2001 62 -4 . .    
  10 1991-2001 71 8 . .    
  5 1996-2001 70 -3 . .    
BBS UK 8 1994-2002 437 -26 -35 -17 (>25)  
BBS England 8 1994-2002 341 -27 -36 -17 (>25)  
BBS Wales 8 1994-2002 47 -37 -56 -12 (>25)  
BBS acknowledgement
CBC/BBS England graph
CES adult abundance
CES juvenile abundance graph
BBS UK graph
BBS England graph
BBS Wales graph
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 33 1968-2001 37 None        
Brood size 33 1968-2001 39 None        
Daily failure rate (eggs) 33 1968-2001 53 Curvilinear 0.034 nests/day 0.0348 nests/day 0.0008 nests/day  
Daily failure rate (chicks) 33 1968-2001 36 Curvilinear 0.0332 nests/day 0.0279 nests/day -0.0053 nests/day  
Laying date 33 1968-2001 34 None        
Percentage juveniles (CES) 17 1984-2001 84 Smoothed trend 93 productivity index 101 productivity index 8%  
Percentage juveniles (CES) 10 1991-2001 95 Smoothed trend 78 productivity index 101 productivity index 28%  
Percentage juveniles (CES) 5 1996-2001 93 Smoothed trend 90 productivity index 101 productivity index 11%  
Clutch size graph
Brood size graph
Egg nest failure graph
Chick nest failure rate
Laying date graph
CES productivity graph
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This report should be cited as:
Crick, H.Q.P., Marchant, J.H., Noble, D.G., Baillie, S.R., Balmer, D.E., Beaven, L.P., Coombes, R.H.,
Downie, I.S., Freeman, S.N., Joys, A.C., Leech, D.I., Raven, M.J., Robinson, R.A. and Thewlis, R.M. (2004)
Breeding Birds in the Wider Countryside: their conservation status 2003.
BTO Research Report No. 353. BTO, Thetford. (http://www.bto.org/birdtrends2003)

Pages maintained by Susan Waghorn and Iain Downie: Last updated 16 February, 2009