The summer migrants are certainly trickling in now. A brief session this morning at the water treatment plant (as someone suggested might sound more salubrious compared to sewerage works) there were Chiffchaff, Willow Warbler, Whitetheoat and Blackcap (3 of the latter ringed). Also Swallow, House Martin and Yellow Wagtail on show.
It was however a bit chilly and I would on reflection have been better employed catching hirundines in the compound than the handful of passerines in the scrub. If the weather is dull tomorrow I may go for the former.