@CarlBovisNature That sounds very credible (excuse the pun) I was there a couple of weeks ago and thought I heard one too Carl, only heard that crackle once, but it certainly sounded right, I put it down to a Reed Warbler doing a mimic
Big flock of Egyptian Geese today at Woodford by the Manor House, I put on BG that there were 50 at least 30 and probably a lot more with a small group of 5 Barnacles