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
.
SISKIN Carduelis spinus
 
Conservation Listings Long term trend

Unlisted/Green
Biodiversity Steering Group Conservation Concern List

UK: Probably increasing
 
Status Summary
The UK Siskin population mainly breeds in Scotland, in coniferous forest habitats that were poorly monitored before the inception of the CBC. The 1988-1991 Atlas found considerable expansion of the breeding range into southern Britain (Gibbons et al. 1993), but the reasons for this spread are unclear. The BBS shows a fluctuating population in recent years, but with no net change.
 
 
Table of population changes for Siskin
Source Period
(yrs)
Years Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
BBS UK 5 1994-1999 111 6 -16 35    
BBS England 5 1994-1999 31 90 26 187   Small sample
BBS Scotland 5 1994-1999 58 -6 -35 37    
The Breeding Bird Survey is jointly funded by BTO, JNCC and RSPB
 
 
Productivity information is not currently available for this species
 
   




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

© 2000 British Trust for Ornithology
BTO, The Nunnery, Thetford, Norfolk IP24 2PU
Tel: (+44) (0) 1842 750050 Fax: (+44) (0) 1842 750030 Email: info@bto.org

Last updated: 7 February, 2001

Page created by Susan Waghorn