the peacock in a ceramic

I'm reading "Emperors' ceramics in Vietnam" these days. I really love ceramics in vietnam and I draw one of the decoration.
I didn't know the name of the bird in English until now. It was a big surprize for me that it was called "peacock" because I often go to "peacock", a supermarket near my house and I hadn't thought about the name of it.

「ベトナムの皇帝陶磁」という本が最近のお気に入りです。壷に描いてあったクジャクを写してみました。クジャクが英語でピーコックだったことに驚きです。「ピーコック」で思いつくのは近所のスーパーマーケットだけでしたから。。