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BTO Blueline
ROBIN
Erithacus rubecula
Robin © G H Higginbotham
Conservation listings

Europe: SPEC category 4, secure
UK: Green

Long-term trend

UK, England: shallow increase

Status summary
Robins have increased markedly since the mid 1980s, according to both CBC/BBS and CES results. Significant improvements have occurred concurrently in breeding performance, according to NRS data, due to reductions in nest failure rates at both egg and chick stages, although CES productivity measures have declined. The CES and BBS graphs show that marked and significant fluctuations occur, perhaps in response to winter weather (these are not evident in the CBC/BBS graphs, where smoothed trends are presented). The reasons for these changes remain to be investigated.
CBC/BBS UK graph
Table of population changes for Robin
Source Period
(yrs)
Years Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
CBC/BBS UK 33 1967-2000 567 35 24 50    
  25 1975-2000 685 26 17 38    
  10 1990-2000 1299 31 26 36    
  5 1995-2000 1995 13 11 16    
CBC/BBS England 33 1967-2000 462 40 25 53    
  25 1975-2000 556 31 21 41    
  10 1990-2000 1042 35 29 40    
  5 1995-2000 1590 13 11 16    
CES adults 17 1984-2001 87 52 . .    
  10 1991-2001 103 26 . .    
  5 1996-2001 104 14 . .    
CES juveniles 17 1984-2001 92 28 . .    
  10 1991-2001 108 9 . .    
  5 1996-2001 112 7 . .    
BBS UK 8 1994-2002 1721 16 12 20    
BBS England 8 1994-2002 1358 24 19 28    
BBS Scotland 8 1994-2002 150 -8 -21 7    
BBS Wales 8 1994-2002 149 17 6 29    
BBS N.Ireland 8 1994-2002 56 28 1 62    
BBS acknowledgement

CBC/BBS England graph

CES adult abundance graph
CES Juvenile abundance graph
BBS UK graph
BBS England graph
BBS Scotland graph
BBS Wales graph

BBS N Ireland graph

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 33 1968-2001 122 None        
Brood size 33 1968-2001 162 None        
Daily failure rate (eggs) 33 1968-2001 181 Curvilinear 0.0247 nests/day 0.011 nests/day -0.0137 nests/day  
Daily failure rate (chicks) 33 1968-2001 151 Curvilinear 0.0242 nests/day 0.0174 nests/day -0.0068 nests/day  
Laying date 33 1968-2001 119 Curvilinear day 117 day 109 -8 days  
Percentage juveniles (CES) 17 1984-2001 96 Smoothed trend 128 productivity index 101 productivity index -22%  
Percentage juveniles (CES) 10 1991-2001 113 Smoothed trend 121 productivity index 101 productivity index -18%  
Percentage juveniles (CES) 5 1996-2001 115 Smoothed trend 112 productivity index 101 productivity index -11%  
Clutch size graph
Brood size graph
Egg nest failure graph
Chick nest failure graph
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