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
Turdus philomelos

• Population

• Productivity

• Additional

Conservation listings
Europe: no SPEC category (concentrated in Europe, conservation status favourable)
UK: red (species level, races clarkei and hebridensis)

UK Biodiversity Action Plan: click here
Long-term trend
UK, England: moderate decline
UK population size
1,144,000 territories in 2000 (1988–91 Atlas estimate updated using CBC/BBS trend: BiE04, APEP06)
Status summary
CBC/BBS shows a rapid decline in Song Thrush abundance that began in the mid 1970s. The second half of this decline can also be seen in the CES index. CES productivity showed an initial decrease, followed by some partial recovery, and NRS data indicate that productivity may have improved since 1981. Changes in survival in the first winter, and perhaps also the post-fledging period, are sufficient to have caused the population decline (Thomson et al. 1997, Siriwardena et al. 1998a, Robinson et al. 2004). The environmental causes of these changes are not known, but changes in farming practices, land drainage, pesticides and predators are all possible contributors (Fuller et al. 1995, Robinson et al. 2004). In woodland, drainage of damp ground and the depletion of woodland shrub layers through canopy closure and deer browsing may also be implicated (Fuller et al. 2005). Recent CBC/BBS data show a general increase, but population levels remain relatively low. Recovery of rural Song Thrush populations requires challenging new policy initiatives that should aim to restore nesting cover in scrub and woodland understorey, grazed grassland in arable-dominated areas, and damper soils in summer (Peach et al. 2004).
CBC/BBS UK graph

1967-2007: -49% (confidence interval -56% to -40%)

Population changes in detail

 Demographic trends

Fledglings per breeding attempt graph
Laying date graph
More on demographic trends
Additional information

BTO blue divider

BTO Home | JNCC Home
 © British Trust for Ornithology. Charity No 216652 (England and Wales).Charity No SC039193 (Scotland)
Company Limited by Guarantee No 357284 (England and Wales).
Registered Office: The Nunnery, Thetford, Norfolk IP24 2PU, UK.
Terms and Conditions
| Privacy Statement          Email:

This report should be cited as: Baillie, S.R., Marchant, J.H., Leech, D.I., Joys, A.C., Noble, D.G., Barimore, C., Downie, I.S., Grantham, M.J., Risely, K. & Robinson, R.A. (2010). Breeding Birds in the Wider Countryside: their conservation status 2009.
BTO Research Report No. 541. BTO, Thetford. (http://www.bto.org/birdtrends)

Pages maintained by Iain Downie, Mandy T Andrews and Laura Smith: Last updated 21.01.2010