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
.
GREY PARTRIDGE Perdix perdix
 
Conservation Listings Long term trend

Table 3/Red (50% Population decline)
Biodiversity Steering Group
Priority Species List

UK: Rapid decline
 
Status Summary
This species has declined enormously, probably because of the effects of agricultural intensification (specifically herbicides) on the food plants of young chicks' insect prey (Potts 1986). Despite years of research and the presence of a Government Biodiversity Action Plan, the continuing decline shown by the BBS suggests that recent efforts to boost the population have not been successful.
 
 
Table of population changes for Grey Partridge
Source Period
(yrs)
Years Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
CBC all habitats 30 1968-1998 60 -83 -88 -77 >50  
  25 1973-1998 57 -83 -87 -77 >50  
  10 1988-1998 40 -52 -62 -41 >50  
  5 1993-1998 38 -29 -39 -17 >25  
BBS UK 5 1994-1999 222 -43 -53 -32 (>25)  
BBS England 5 1994-1999 194 -45 -55 -33 (>25)  
BBS Scotland 5 1994-1999 26 -34 -63 20   Small sample
The Breeding Bird Survey is jointly funded by BTO, JNCC and RSPB
 
 
Productivity information is not currently 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: 18 April, 2001

Page created by Susan Waghorn