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NIGHTINGALE Luscinia megarhynchos
 
Conservation Listings Long term trend

Table 4/Amber
(25-49% Distribution decline)

Biodiversity Steering Group Conservation Concern List

UK: Probable decline
 
Status Summary
In 1999, the BTO organised a national survey of Nightingales which showed marked range contractions, but only a small overall population decline (8%) since the previous survey in 1980. Nightingales are restricted in distribution in the UK and their preferred habitats are not covered well by the CBC. Nevertheless, detailed analysis of the available CBC data show a smooth, continuing decline (G.M. Siriwardena, unpubl.) and the CES is suggestive of a similar pattern, at least until 1997. Nightingales may be affected by cold and wet springs, and the CES indicates a decline in productivity in the 1980s.
 
 
Table of population changes for Nightingale
Source Period
(yrs)
Years Plots
(n)
Change
(%)
Lower
limit
Upper
limit
Alert Comment
CES adults 14 1984-1998 10 0 . .   Small sample
  10 1988-1998 11 14 . .   Small sample
  5 1993-1998 13 66 . .   Small sample
CES juveniles 14 1984-1998 7 -58 . . [>50] Small sample
  10 1988-1998 6 -11 . .   Small sample
  5 1993-1998 8 1 . .   Small sample
BBS England 5 1994-1999 28 8 -27 59   Small sample
The Breeding Bird Survey is jointly funded by BTO, JNCC and RSPB
 
 
Table of productivity information for Nightingale
Variable Period
(yrs)
Years Mean
annual
sample
Trend Predicted
in first year
Predicted
in last year
Change Comment
Percentage juveniles (CES) 14 1984-1998 12 Smoothed trend 328 productivity index 100 productivity index -70%[>50] Small sample
Percentage juveniles (CES) 10 1988-1998 13 Smoothed trend 122 productivity index 100 productivity index -18% Small sample
Percentage juveniles (CES) 5 1993-1998 16 Smoothed trend 171 productivity index 100 productivity index -42%[>25] Small sample
 

 

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

 

   



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)

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Last updated: 4 July, 2001

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