Marsh Harrier: fem/juv. Seen twice. Taken for a kite at first glance but bins revealed a darker bird, with a square-ended tail. Typical flight observed (somehow ponderous and graceful!) over wheat fields as bird disappeared East towards Letcombe Bassett. Seen 30 mins later high(er) over the punchbowl - backlit so finer plumage details not observable, but generally dark bird. Again disappeared East.