Phil and I stopped off in Holyhead harbour on our way to Anglesey. We were looking for Black Guillemots, as they are often seen here. Low and behold, as I peered over the harbour side there was a Shag. I double checked with Phil that it was indeed a Shag and not a Cormorant. I was delighted when it was confirmed and ran for the camera. I often wondered if I'd actually be able to tell the difference between a Cormorant and the Shag, but it was quite easy when I saw this one. It's quite a bit smaller and slender looking. It also has a lovely green colouration.
The Black Guillemots we actually went to see.