The British Trust for Ornithology
WOODLARK
Lullula arborea

Woodlark © Derek Belsey
Conservation Listings

Table 2/Red (>=50% Distribution decline)
Biodiversity Steering Group Priority Species List
Long term trend
UK: Increase
Status Summary
Sitters et al. (1996) report that the population of this rare breeding bird increased from c.250 pairs in 1986 to c.600 pairs in 1993, probably helped by recent mild winters and increased habitat availability due to forest storm damage, forest restocking, and heathland management. A national survey in 1997 showed that the population had increased further to c.1550 pairs (Wotton & Gillings 2000; see http://www.bto.org/research/archive/arch3.htm). Strong trends are not generally evident in breeding performance, although failure rates at the egg stage (17 days, comprising 14 days incubation + 3 days laying) have declined from 43% to 23% between 1975 and 1999 (extrapolation before 1975 is not reliable because of paucity of data).
Annual breeding population changes for this species
are not currently monitored by BTO
Table of productivity information for Woodlark
Variable Period
(yrs)		 Years Mean
annual
sample		 Trend Predicted
in first year		 Predicted
in last year		 Change Comment
Clutch size 31 1968-1999 15 None       Small sample
Brood size 31 1968-1999 23 None       Small sample
Daily failure rate (eggs) 31 1968-1999 17 Linear decline 0.0397 nests/day 0.0153 nests/day -0.0244 nests/day Small sample
Daily failure rate (chicks) 31 1968-1999 24 None       Small sample
Laying date 31 1968-1999 16 None       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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