Just before lunch in Maes y Dre St David's I noticed a Build
up of House Martins with a few Swallows - 20-30 in total - suddenly 50-60 then
many more, well over 100. Seemingly resting
and warming on the hottest roofs in the area. Then in a blink they all flew off
in a Southerly direction.
About an hour ago the same thing happened again - as I write
this a few more birds seem to be congregating.
I have now decided this is no longer a local concentration
but migration - a truly wonderful spectacle of nature