Lynford Arboretum - 2 TWO-BARRED CROSSBILLS & 20 Common Crossbills. Colney - GREAT WHITE EGRET. Egmere - Great Grey Shrike. Kelling - COUES' ARCTIC REDPOLL. Salthouse - 50 Snow Buntings. Marlingford/Bawburgh - GREAT WHITE EGRET (same bird as Colney above) Felbrigg - Whooper Swan. Winterton - Hen Harrier.