PROBLEM TO BE SOLVED: To provide a leg ring for a bird which cannot be removed by its own power of the ring-attached bird.SOLUTION: In a leg ring 1 for a bird including a partially-notched ring-shaped and elastically-deformable belt-like body part 10, a convex fitting part 20 formed on one end in a longer direction of the belt-like body part 10, and a concave fitting part 30 formed on the other end in the longer direction of the belt-like body part 10, both ends in the longer direction of the belt-like body part 10 are moved relatively only in a radial direction of the belt-like body part 10 mutually, and thereby the convex fitting part 20 and the concave fitting part 30 are fitted mutually.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】取り付けられた鳥類が自力で取り外すことのない鳥類用足環を提供する。【解決手段】一部切欠環形状をなし、弾性変形可能な帯状本体部10と、帯状本体部10の長手方向一端に形成された凸状嵌合部20と、帯状本体部10の長手方向他端に形成された凹状嵌合部30と、を具備し、帯状本体部10の長手方向両端が互いに帯状本体部10の径方向にのみ相対移動して、凸状嵌合部20及び凹状嵌合部30が互いに嵌合してなる鳥類用足環1である。【選択図】図1
