- The GOS outdoor walk to RSPB Grey Lake, Ham Wall and Durliegh Reservoir went very well with 50+ species. Highlights - Barn Owl, Red Kite, Marsh Harriers, Bittern, Ring-Necked Duck, Glossy Ibis, Spotted Redshank and a Whiskered Tern #birdingwalesApr 20, 2025 18:46