Life had become a blur for the crane whose fuzzy vision had kept him in captivity. Experts were baffled by the Eurasian crane’s unusual behaviour which saw him spend a lot time on his own and lose weight. By Kate Scotter (EDP 24).
http://www.edp24.co.uk/news/environment/video_pensthorpe_crane_recovers_from_pioneering_eye_surgery_1_3031678
