rarest

1.one of Britain's rarest birds, the honey buzzard.

英国珍奇鸟类之一——食蜂鹰。

2.A rescue mission to save one of the world’s rarest birds, the Madagascar Pochard, seems to have succeeded.

拯救世界上最珍惜鸟类马达加斯加鸭的任务似乎已经取得成功。