BTO - Breeding Birds of the Wider Countryside: Lesser Whitethroat

LESSER WHITETHROAT
Sylvia curruca

• Population
changes

• Productivity
trends

• Additional
information

Conservation listings

Europe: no SPEC category (favourable conservation status in Europe, not concentrated in Europe)
UK: green

Long-term trend

UK, England: shallow decline

UK population size

64,000 territories in 2000 (1988–91 Atlas estimate updated using CBC/BBS trend: BiE04, APEP06)

Status summary

Lesser Whitethroat abundance was roughly stable (albeit with short-term fluctuations) from the 1960s until the late 1980s, but the CBC/BBS and CES trends provide evidence for a subsequent moderate decline. These changes were statistically significant, and large enough over the relevant periods to trigger BTO alerts. The species would now meet the amber-list criterion of moderate decline. Wide fluctuations in productivity have been recorded by CES ringers, and may be influencing population change, but pressures during migration and in winter are the most likely causes of decline (Fuller et al. 2005).

Population changes

Productivity trends

Insufficient data on clutch size
available for this species

Insufficient data on brood size
available for this species

Insufficient data on nest failure
available for this species

Insufficient data on nestling failure
available for this species

Insufficient data on laying date
available for this species

Additional information


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This report should be cited as: Baillie, S.R., Marchant, J.H., Crick, H.Q.P., Noble, D.G., Balmer, D.E., 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. (2006) Breeding Birds in the Wider Countryside: their conservation status 2005. BTO Research Report No. 435. BTO, Thetford. (http://www.bto.org/birdtrends) Pages maintained by Susan Waghorn and Iain Downie: Last updated 28 April, 2006