The Wild Bird Society, which takes protecting wild birds as its chief aim, has done bird surveys as well as bird banding. They often find birds felled by injury or illness.
以保護野生鳥類為宗旨的野鳥學會鳥友，在野外進行鳥類調查、繫放工作，經常發現因為鳥巢掉落等原因受傷、生病的野鳥。