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House martins at Clifton Hampden bridge

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Old Sunday 29th March 2015, 20:43   #1
moose1991
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Join Date: Apr 2004
Location: Wiltshire
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House martins at Clifton Hampden bridge

Last week I bought a copy of Bruce Campbell's book Birdwatcher At Large (published 1979 ) for a quid at a National Trust property.

This morning I was reading about the decline of House martin nests under the bridge at Clifton Hampden . He started recording the number of nests in 1951.
As you can see from the attached chart when he started recording the number of nests there were up to 500 nests under it.

Anyone any idea how many nests there have been in more recent years ?
Does anyone still keep a record ?
From the decline shown in that chart I imagine it's a big fat zero.
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