雉鸡又名野鸡、环颈雉、华虫，属鸟纲雉科。

雄性雉鸡的羽毛非常多样，从几乎白色到几乎黑色都有，这是由于驯化及与绿雉杂交，加上放生不同的亚种杂交的结果。例如在欧洲、北美、澳洲的雉鸡族群常是多个亚种的杂交，没有特定的分类。

雄鸟体长约76-89公分。尾长，黑色有条纹，占体长近50公分。身体羽色通常为棕褐色，有多种变型，头部深绿色，有小型冠羽和红色眼斑肉垂。白色颈环有或退化。

雌鸟体长约53-63公分，其中尾部大约20公分。羽色单调，全身为有杂斑的棕褐色至灰色。稚鸟体色和雌鸟一样，大约孵化后10个礼拜雄鸟才会在头、胸、背部长出亮丽的羽毛。

The common pheasant (Phasianus colchicus) is a bird in the pheasant family (Phasianidae). It is native to Asia and has been widely introduced elsewhere as a game bird. In parts of its range, namely in places where none of its relatives occur such as in Europe (where it is naturalized), it is simply known as the "pheasant". Ring-necked pheasant is both the name used for the species as a whole in North America and also the collective name for a number of subspecies and their intergrades which have white neck rings.