The British Trust for Ornithology
SAND MARTIN
Riparia riparia
Sand Martin © Tommy Holden
 
Conservation Listings

Table 4/Amber (European status)
Biodiversity Steering Group Conservation Concern List
Long term trend
UK: Fluctuating with no long-term trend
 
Status Summary
New analytical techniques now allow long-term population trends to be produced for Sand Martin for the first time. The WBS shows a stable population with some fluctuations, but movements of whole colonies may cause problems with the survey and may have obscured the true long-term trends. Winter rainfall in the species' trans-Saharan wintering grounds are believed to affect annual survival and thus abundance in the following breeding season.
 
 
Table of population changes for Sand Martin
Source Period
(yrs)		 Years Plots
(n)		 Change
(%)		 Lower
limit		 Upper
limit		 Alert Comment
WBS waterways 24 1975-1999 18 53 -5 228   Small sample
  10 1989-1999 24 -17 -44 38    
  5 1994-1999 27 -11 -24 9    
BBS UK 6 1994-2000 96 39 9 77    
BBS England 6 1994-2000 65 113 64 177    
The Breeding Bird Survey is jointly funded by BTO, JNCC and RSPB
 
 
Table of productivity information for Sand Martin
Variable Period
(yrs)		 Years Mean
annual
sample		 Trend Predicted
in first year		 Predicted
in last year		 Change Comment
Clutch size 31 1968-1999 11 None       Small sample
Brood size 31 1968-1999 12 None       Small sample
Laying date 31 1968-1999 10 Linear increase day 147 day 178 31 days Small sample
 

 

Insufficient data on nest failure
available for this species

 

 

Insufficient data on nestling failure
available for this species

 

 

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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