An anklet includes a metal ring structure having a body and a connector connected to each other. The body has a cavity defined therein for receiving an indicator and at least one window defined therein and communicating with the cavity. Consequently, user can easily read the indicator or scan the indicator for reading the datum that saved in the indicator.本發明係一種腳環,包含有:一金屬材質之腳環,該腳環為一主體及一連接件所組成,該主體前端設一可供一辨識件置入之容置孔,且設置可與該容置孔相通之至少一辨識窗,利用金屬材質製成主體及連接件以防止他人任易破壞,及辨識窗易於由外直接觀視辨識件,或由掃瞄器掃瞄辨識件,即可輕易辨識此鳥禽所有資料之腳環。(1)...腳環(10)...主體(11)...容置孔(12)...封體(13)...辨識窗(14)...蓋體(15)...延伸臂(16)...第一凸耳(161)...貫穿孔(20)...辨識件(30)...連接件(31)...第二凸耳(311)...盲孔(312)...孔(33)...樞接件
