"八哥"是指中文名为"知更鸟"的鸟类。在英文中，这种鸟的通常称呼是"chaffinch"。它来自拉丁文的"Fringilla coelebs"，意思是"无伴鸟"。

下面是一些使用 "chaffinch" 的英文例句，并附上中文翻译：

The chaffinch is a common sight in gardens and parks. (八哥在花园和公园里很常见。)
The male chaffinch has a distinctive pink breast. (公八哥有明显的粉色胸部。)
The chaffinch is known for its beautiful song. (八哥因其优美的歌声而闻名。)