Newport to Cwm Dyffryn and around the estuary

We heard a piercing screaming bird call echoing around a small cove and thought at first that it was a gull, but eventually spotted a Peregrine on a cliff ledge and realised that it was the source of the noise.  I was not able to work out quite what the fuss was all about as I could not locate a potential mate, or a nest, so no explanation.

A Coast Path working party had been busy cutting grass and this had probably caused some disturbance of the local wildlife: several lizards ran across the path and a Slow Worm was sunning itself on a flight of steps. Huge, hairy Drinker Moth Philudoria potatoria caterpillars were trundling about and a couple of outsize Oil Beetles Meloe sp.  They are flightless and have very small elytra.
We are used to House Martins nesting in, well, houses and barns and the like.  So what did they do before there were houses?  We found the answer here on the cliffs where several pairs of House Martins were nesting on the cliffs in shallow overhangs.   There were what appeared to be guano streaks below these sites suggesting that they had been used for some time.
There were two Bar-tailed Godwits in the estuary to add to the list, feeding on the edge at high tide.  On sheltered rocks there were two small Herring Gull colonies with about half a dozen nests in each and a single Fulmar.  Oddly enough the last additions to the week’s bird list were Bluetit (at the cafe on a bird feeder) and a great tit on scrub along the estuary.