To provide an individual identification tag on which an individual identification information label can be easily mounted, and which is light, a little burden to a poult and can be attached to a position where the individual identification tag is easily recognized optically.SOLUTION: The individual identification tag includes: a lock part 1； flat plate part 2； and needle part 3, the lock part and the flat plate part are connected to each other, and the flat plate part and the needle part are connected to each other using a first hinge 4 and second hinge 5, respectively, and consequently they are integrally formed. The needle part has: an acuate tip 8 at the end thereof opposite to the second hinge； and a serrated fitting part 9 in the vicinity of the tip. The flat plate part has a flat front face 21 in the outer circumferential surface thereof. The lock part has: a reception part 11 into which the tip of the needle part can be inserted and fitted； and an arm part 12 formed so as to be continuous with the reception part. The reception part has: a fitting port 6 into which the tip of the needle part is inserted； and lock structure 7 inside the fitting port, the lock structure being fitted into the fitting part. A space part surrounded by the arm part, flat plate part, and needle part is formed when the tip of the needle part is inserted into the fitting port by rotating the first hinge.SELECTED DRAWING: Figure 2【課題】個体識別情報ラベルを容易に装着でき、軽くてヒナの負担が少なく、光学的に認識し易い位置に取り付けることができる個体識別用タグを提供する。【解決手段】ロック部１と平板部２と針部３を有し、ロック部と平板部、平板部と針部がそれぞれ第１ヒンジ４、第２ヒンジ５で繋がり一体に形成されており、針部は第２ヒンジと反対側の端部が尖った形状の先端８を有し、先端の近傍に鋸歯状の嵌合部９を有しており、平板部の外周面には平坦なおもて面２１を有し、ロック部は針部の先端を挿入して嵌合可能な受け部１１と、受け部に連続する形で形成されたアーム部１２を有し、受け部は針部の先端が挿入される嵌入口６と、嵌入口の内部に嵌合部と嵌合するロック構造７を有し、第１ヒンジを回転させて針部の先端を嵌入口に挿入したときにアーム部、平板部および針部に囲まれた空間部が形成される。【選択図】図２
