My Butterhill correspondent (Butterhill is a cluster of dwellings near St Ishmaels) tells me that the colony on the big house there seems to be doing well this year - there have been over 20 nests there in the very recent past. I have asked him to look out for House Sparrow interference and he is going to do so.
Regarding cliff-nesting martins, we saw good numbers of them in 2016 at the cliffs just west of Ceibwr Bay GR SN105456.
