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 (favourable conservation status in Europe, not concentrated in Europe)
UK: Green
Long-term trend
UK, England: rapid increase
Distribution maps
Distribution maps for this species are not currently available online (see Atlases species help)
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. The upsurge 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 35 1967-2002 131 407 240 1287    
  25 1977-2002 179 268 155 509    
  10 1992-2002 417 121 80 168    
  5 1997-2002 610 27 18 37    
CBC/BBS England 35 1967-2002 75 352 203 977    
  25 1977-2002 103 307 170 595    
  10 1992-2002 237 139 89 187    
  5 1997-2002 351 27 18 42    
BBS UK 9 1994-2003 504 53 38 69    
BBS England 9 1994-2003 280 56 37 78    
BBS Scotland 9 1994-2003 99 81 41 132    
BBS Wales 9 1994-2003 113 5 -14 29    
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 34 1968-2002 30 Curvilinear 2.16 eggs 2.18 eggs 0.02 eggs  
Brood size 34 1968-2002 84 None        
Daily failure rate (eggs) 34 1968-2002 23 Linear decline 0.0065 nests/day 0.0017 nests/day -0.0048 nests/day Small sample
Daily failure rate (chicks) 34 1968-2002 42 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:
Baillie, S.R., Marchant, J.H., Crick, H.Q.P., Noble, D.G., 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. (2005)
Breeding Birds in the Wider Countryside: their conservation status 2004.
BTO Research Report No. 385. BTO, Thetford. (http://www.bto.org/birdtrends)

Pages maintained by Susan Waghorn and Iain Downie: Last updated 18 January, 2006