Wider Countryside Report Header
BTO Blueline
Main WCR menu image Site navigation menu item Results overview menu item Other info menu item BTO website menu item
BTO Blueline
BUZZARD
Buteo buteo
Buzzard © Derek Belsey
 
Conservation listings

Europe: no SPEC category, secure
UK: Green

Long-term trend
UK, England: rapid increase
 
Status summary
The Common Buzzard has shown a substantial eastward range expansion since the 1988-91 Atlas, and is arguably now the most abundant diurnal raptor in Britain (Clements 2002). The increasing trend identified by the CBC relates especially to the spread of range into central and eastern Britain, where CBC was more strongly representated. It has, however, if anything, been ampified by the addition of the more geographically representative BBS data since 1994. The increase has been associated with improving nesting success, perhaps through reduced persecution, the recovery of rabbit populations from the effects of myxomatosis and release from the deleterious effects of organochlorine pesticides (Elliott & Avery 1991, Clements 2002).
 
CBC/BBS UK graph
 
Table of population changes for Buzzard
Source Period
(yrs)
Years Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
CBC/BBS UK 33 1967-2000 116 366 211 1296    
  25 1975-2000 148 262 174 576    
  10 1990-2000 323 159 102 270    
  5 1995-2000 523 34 26 46    
CBC/BBS England 33 1967-2000 66 317 180 895    
  25 1975-2000 85 316 202 798    
  10 1990-2000 183 195 124 357    
  5 1995-2000 297 38 26 52    
BBS UK 8 1994-2002 475 51 36 68    
BBS England 8 1994-2002 261 58 38 81    
BBS Scotland 8 1994-2002 95 73 34 122    
BBS Wales 8 1994-2002 109 11 -9 36    
BBS acknowledgement
 
CBC/BBS England graph
BBS UK graph
BBS England graph
BBS Scotland graph
BBS Wales graph
 
Table of productivity information for Buzzard
Variable Period
(yrs)
Years Mean
annual
sample
Trend Predicted
in first year
Predicted
in last year
Change Comment
Clutch size 33 1968-2001 31 Curvilinear 2.16 eggs 2.21 eggs 0.05 eggs  
Brood size 33 1968-2001 86 None        
Daily failure rate (eggs) 33 1968-2001 24 Linear decline 0.0065 nests/day 0.0018 nests/day -0.0047 nests/day Small sample
Daily failure rate (chicks) 33 1968-2001 43 None        
 
Clutch size graph
Brood size graph
Egg nest failure graph
Chick nest failure graph

 

Insufficient data on laying dates
available for this species

 

 

Insufficient data on CES
available for this species

 

BTO blue divider
BirdWeb logo, click to go to BirdWeb

BTO Home | JNCC Home
BTO, The Nunnery, Thetford, Norfolk IP24 2PU, UK.
 © British Trust for Ornithology (Registered Charity Number 216652).
Terms and Conditions
| Privacy Statement          Email:


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