Redstarts are passage migrants in Buckinghamshire and not particularly easy to find. However they do turn up at regular locations while on migration and Jennings Farm is such a place.
A bird was found the previous evening by Matt Milne and relocated the following day. I was there with David Bevan and we had good views of two Redstarts, a male and a female. Also present along the same hedgerow was a Wheatear and a Whinchat, also passage migrants in Buckinghamshire.
A brief video clip follows.
