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ROBIN Erithacus rubecula
 
Conservation Listings Long term trend

Unlisted/Green
Biodiversity Steering Group: Unlisted

UK: Shallow increase
 
Status Summary
Robins have increased since the mid-1980s according to both the CBC and the CES. Concurrently, significant improvements have occurred in breeding performance due to reductions in nest failure rates at the egg stage (for the 17-day egg stage (13 days incubation + 4 days laying) failure rates have fallen from 35% to 20%). Before the large population increase, abundance fluctuated, perhaps in response to winter weather. The CES and BBS show that marked, significant fluctuations have also occurred over the last 15 years.
 
 
Table of population changes for Robin
Source Period
(yrs)
Years Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
CBC all habitats 30 1968-1998 217 23 11 39    
  25 1973-1998 224 16 6 29    
  10 1988-1998 211 25 19 32    
  5 1993-1998 219 6 3 11    
CBC farmland 30 1968-1998 92 9 . .    
  25 1973-1998 91 3 . .    
  10 1988-1998 92 26 . .    
  5 1993-1998 93 4 . .    
CBC woodland 30 1968-1998 71 45 . .    
  25 1973-1998 77 36 . .    
  10 1988-1998 87 29 . .    
  5 1993-1998 92 11 . .    
CES adults 14 1984-1998 85 29 . .    
  10 1988-1998 99 20 . .    
  5 1993-1998 107 -1 . .    
CES juveniles 14 1984-1998 90 23 . .    
  10 1988-1998 104 15 . .    
  5 1993-1998 113 1 . .    
BBS UK 5 1994-1999 1641 12 8 16    
BBS England 5 1994-1999 1300 11 7 15    
BBS Scotland 5 1994-1999 150 17 1 36    
BBS Wales 5 1994-1999 129 11 -1 23    
BBS N.Ireland 5 1994-1999 52 27 -2 63    
The Breeding Bird Survey is jointly funded by BTO, JNCC and RSPB
 

 
Table of productivity information for Robin
Variable Period
(yrs)
Years Mean
annual
sample
Trend Predicted
in first year
Predicted
in last year
Change Comment
Clutch size 30 1968-1998 125 None        
Brood size 30 1968-1998 166 None        
Daily failure rate (eggs) 30 1968-1998 187 Curvilinear 0.0248 nests/day 0.0131 nests/day -0.0117 nests/day  
Daily failure rate (chicks) 30 1968-1998 156 None        
Laying date 30 1968-1998 122 None        
Percentage juveniles (CES) 14 1984-1998 95 Smoothed trend 109 productivity index 100 productivity index -8%  
Percentage juveniles (CES) 10 1988-1998 109 Smoothed trend 108 productivity index 100 productivity index -8%  
Percentage juveniles (CES) 5 1993-1998 117 Smoothed trend 101 productivity index 100 productivity index -1%  

 

   



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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