The British Trust for Ornithology
TREE PIPIT
Anthus trivialis

Tree Pipit © Peter Beaven

Conservation Listings

Unlisted/Green
Biodiversity Steering Group Conservation Concern List

  Long term trend
UK: Unknown
Lowland England: Rapid decline
Status Summary
Tree Pipits occur in greatest abundance in Wales, north England and Scotland, and thus the marked CBC decline may reflect the range contraction that has occurred in central and south-east England (Gibbons et al. 1993). This is suggested by the contrasting patterns of change shown by the BBS in Scotland and England. While populations increased in Scotland during the mid to late 1990s, English populations declined substantially. Improvements have occurred in breeding performance with a substantial increase in brood size and a decline in failure rates over the 17-day egg stage (13 days incubation + 4 days laying) from 55% to 15%. The causes of the population decline are unclear, but may be linked to changing forest structure (with maturity) and increased grazing pressure in woodland (Vanhinsbergh et al. 2001).
Table of population changes for Tree Pipit
Source Period
(yrs)
Years Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
CBC all habitats 31 1968-1999 33 -76 -87 -62 >50 Unrepresentative
  25 1974-1999 31 -75 -86 -61 >50 Unrepresentative
  10 1989-1999 20 -61 -76 -47 >50 Unrepresentative, small sample
  5 1994-1999 19 -14 -44 12   Unrepresentative, small sample
BBS UK 6 1994-2000 124 12 -8 36    
BBS England 6 1994-2000 66 -1 -23 26    
BBS Scotland 6 1994-2000 28 31 -17 107   Small sample
BBS Wales 6 1994-2000 30 6 -28 55   Small sample
The Breeding Bird Survey is jointly funded by BTO, JNCC and RSPB
Table of productivity information for Tree Pipit
Variable Period
(yrs)
Years Mean
annual
sample
Trend Predicted
in first year
Predicted
in last year
Change Comment
Brood size 31 1968-1999 28 Linear increase 4.34 chicks 4.75 chicks 0.41 chicks Small sample
Daily failure rate (eggs) 31 1968-1999 11 Linear decline 0.0457 nests/day 0.0096 nests/day -0.0361 nests/day Small sample
Daily failure rate (chicks) 31 1968-1999 17 None       Small sample
Laying date 31 1968-1999 17 Linear decline day 147 day 135 -12 days Small sample
Insufficient data on CES
available for this species




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This report should be cited as:
Baillie, S.R., Crick, H.Q.P., Balmer, D.E., Beaven, L.P., Downie, I.S., Freeman, S.N., Leech, D.I., Marchant, J.H.,
Noble, D.G., Raven, M.J., Simpkin, A.P., Thewlis, R.M. and Wernham, C.V.
(2002) Breeding Birds in the Wider
Countryside: their conservation status 2001. BTO Research Report No. 278. BTO, Thetford. (http://www.bto.org/birdtrends)

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This page last updated: 21 April, 2008

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