I have gone through the last few years barely hearing or seeing a greenfinch.
Then yesterday (14 April) I did my third visit to Sydenham, Oxfordshire, for the River Thame Conservation Trust, bird survey. Shortly after I started my walk, in a tree by the church, I heard their plaintive cries. There were at least four there, mixed with some goldfinches.
Other features of my two-and-a-half-hour walk (see the route here) were at least four yellowhammers in the fields, so I hope they are breeding, and at least ten chiffchaffs and six blackcaps—heard, and easily seen now before the leaves come out on the trees.
Rooks topped my list (25), busily nesting, followed by blue tits (20), robin (15) and great tit (11). I saw 27 species in all. A rewarding morning.