The British Trust for Ornithology
LESSER REDPOLL
Carduelis cabaret

Lesser Redpoll © Tommy Holden

Conservation listings

Unlisted/Green
Biodiversity Steering Group Conservation Concern List

  Long-term trend
UK: Uncertain
Lowland: Rapid decline
Status summary
The CBC and CES each depend on rather small numbers of relevant plots and are unlikely to be representative of Redpoll populations in the UK, which are most abundant in the north and west of Britain. However, both surveys identified a rapid population decline, which the CBC suggests began in the mid-1970s. The Redpoll's range has also contracted (Gibbons et al. 1993). It is unclear from the BBS whether the decline has ceased and, if not, whether it has occurred over a wider geographical area than that represented by the CBC and CES. CES data indicates a moderate decline in productivity over the past 14 years and there is evidence that survival rates fell during the population decline (Siriwardena et al. 1998a).
 
 
Table of population changes for Lesser Redpoll
Source Period
(yrs)
Years Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
CBC all habitats 31 1968-1999 42 -93 -97 -83 >50 Unrepresentative?
  25 1974-1999 40 -96 -98 -92 >50 Unrepresentative?
  10 1989-1999 14 -83 -93 -66 >50 Unrepresentative? small sample
  5 1994-1999 9 -58 -80 -16 >50 Unrepresentative? small sample
CES adults 15 1984-1999 20 -78 . . [>50*] Small sample
  10 1989-1999 21 -67 . . [>50*]  
  5 1994-1999 18 -34 . . [>25] Small sample
CES juveniles 15 1984-1999 11 -87 . . [>50] Small sample
  10 1989-1999 12 -68 . . [>50] Small sample
  5 1994-1999 11 -46 . . [>25] Small sample
BBS UK 6 1994-2000 118 8 -14 36    
BBS England 6 1994-2000 46 -35 -56 -5 (>25) Small sample
BBS Scotland 6 1994-2000 37 19 -21 80   Small sample
The Breeding Bird Survey is jointly funded by BTO, JNCC and RSPB
 
 
Table of productivity information for Lesser Redpoll
Variable Period
(yrs)
Years Mean
annual
sample
Trend Predicted
in first year
Predicted
in last year
Change Comment
Daily failure rate (eggs) 31 1968-1999 11 None       Small sample
Laying date 31 1968-1999 12 None       Small sample
Percentage juveniles (CES) 15 1984-1999 21 Smoothed trend 231 productivity index 100 productivity index -57%[>50]  
Percentage juveniles (CES) 10 1989-1999 23 Smoothed trend 139 productivity index 100 productivity index -28%[>25]  
Percentage juveniles (CES) 5 1994-1999 20 Smoothed trend 134 productivity index 100 productivity index -26%[>25] Small sample
 

Insufficient data on clutch size
available for this species

 

Insufficient data on brood size
available for this species

 

Insufficient data on nestling failure
available for this species




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This report should be cited as:
Baillie, S.R., Crick, H.Q.P., Balmer, D.E., Beaven, L.P., Downie, I.S., Freeman, S.N., Leech, D.I., Marchant, J.H.,
Noble, D.G., Raven, M.J., Simpkin, A.P., Thewlis, R.M. and Wernham, C.V.
(2002) Breeding Birds in the Wider
Countryside: their conservation status 2001. BTO Research Report No. 278. BTO, Thetford. (http://www.bto.org/birdtrends)

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This page last updated: 21 April, 2008

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