Highlighted by a very early morning Yellow-browed Warbler and continuing presence of the White-winged Black Tern (although it appeared to fly north past the wooden jetty mid-afternoon - updates appreciated). The circumstances were a bit bizarre. I was setting a line of three nets by moonlight (plenty of it) with an MP3 in my pocket with Yellow-browed Warbler playing quietly, ready to raise the volume and stick on a branch next to the net when I had finished setting. Then, whilst it was still virtually dark (pre-ticking Robin etc time), what sounded very much like a nearby response, then again! The volume on the MP3 in my pocket was minimal, so there is no way this was a bird pulled down from the pre-dawn stratosphere. A couple of shapes also flew into the nets as it they were being set (Blackcap and (long distance night migrant?!) unringed fat-less Dunnock). Went back to ring these and the next round of the net saw a/the Yellow-browed Warbler neatly pocketed.
Then the agenda rapidly changed with clearing skies and the rest of the morning was very night-migrant free apart from three Chiffchaff (similar at Middleton) but a bit of vis mig kept the interest going, notably a minor Coal Tit irruption and a huge flock of migrant corvids. So very, very fortunate to score with YBW on what was essentially a clear, moonlit early morning with just a few wisps of high cloud. Focused on rather more why we need a new office building than the Yellow-browed Warbler, but you get the idea on the pic below. Having real problems getting the pic to go right way round (photo Jean Roberts - sorry it isn't sharp, I-phone pic)