Carrying on towards the field, I noted a Goldcrest which I tried and failed to turn into a Firecrest, and then heard a distinctive two-note tit call which made me think 'Marsh Tit?'. But I decided it couldn't be, because I've never seen a Marsh Tit here. I was leaning on the gate by the field when another birder arrived and asked excitedly if I'd seen the Marsh Tit... So that's my patch tick, but sadly just a 'heard' record as I couldn't refind it, and I'm a little bit annoyed with myself for dismissing the possibility.
I headed back towards Willow hide, noting a nice surprise on the way - female Bullfinch, who dodged my camera with uncanny timing. Thinking there must be a male around somewhere I had a good look and listen but to no avail.