我弟弟是个夜猫子，经常打游戏到凌晨三点。

My brother is a real ___nighthawk, often playing video games until 3 AM.

夜晚散步时，我们看到一只夜鹰在月光下捕食飞虫。

During our evening walk, we saw a ___nighthawk hunting insects under the moonlight.