Contents of report
Breeding Bird Survey
Common Birds Census
Constant Effort Sites
Nest Record Scheme
Waterways Bird Survey
Alerts
Summary
What the categories mean
Return to BTO Home Page
.
REDSTART Phoenicurus phoenicurus
 
Conservation Listings Long term trend

Table 4/Amber (European Status)
Biodiversity Steering Group Conservation Concern List

UK: Uncertain
Lowland: Fluctuating with no long-term trend
 
Status Summary
The decline in the late 1960s and early 1970s was thought to be due to severe drought conditions in the Sahel wintering area in Africa (Marchant et al. 1990). The subsequent recovering appears to be continuing. The population increase has been associated with improving breeding performance and progressively earlier laying dates. The decline in failure rates at the egg stage (17 days, comprising 12 days incubation + 5 days laying) is from 18% down to 7%. The trend towards earlier laying can be partially explained as a result of recent climate change(Crick & Sparks 1999).
 
 
Table of population changes for Redstart
Source Period
(yrs)
Years Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
CBC all habitats 30 1968-1998 23 6 -26 78   Unrepresentative
  25 1973-1998 23 109 50 197   Unrepresentative
  10 1988-1998 26 6 -10 20   Unrepresentative
  5 1993-1998 27 7 -10 25   Unrepresentative
BBS UK 5 1994-1999 128 37 13 66    
BBS England 5 1994-1999 69 53 17 102    
BBS Wales 5 1994-1999 48 1 -22 32   Small sample
The Breeding Bird Survey is jointly funded by BTO, JNCC and RSPB
 
 
Table of productivity information for Redstart
Variable Period
(yrs)
Years Mean
annual
sample
Trend Predicted
in first year
Predicted
in last year
Change Comment
Clutch size 30 1968-1998 52 Linear increase 5.99 eggs 6.46 eggs 0.47 eggs  
Brood size 30 1968-1998 91 Curvilinear 5.09 chicks 5.63 chicks 0.54 chicks  
Daily failure rate (eggs) 30 1968-1998 78 Linear decline 0.0115 nests/day 0.0044 nests/day -0.0071 nests/day  
Daily failure rate (chicks) 30 1968-1998 55 None        
Laying date 30 1968-1998 66 Curvilinear day 140 day 133 -7 days  
 
Insufficient data on CES
available for this species

 

   



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)

[ Welcome | Contents | Introduction | CBC | WBS | BBS | Heronries | CES | NRS | Alerts ]
[ Summary | Discussion | References | Help | BTO Home Page ]

© British Trust for Ornithology
BTO, The Nunnery, Thetford, Norfolk IP24 2PU
Tel: (+44) (0) 1842 750050 Fax: (+44) (0) 1842 750030 Email:

Last updated: 4 July, 2001

Page created by Susan Waghorn