鸟类学的

例句：

1. 1. The study of birds is an important field in avian biology.
   鸟类学是鸟类生物学的一个重要领域。
2. 2. Birds are known for their ability to fly and their beautiful songs.
   鸟类以其飞行能力和美丽的歌声而闻名。
3. 3. Many species of birds have adapted to life on the high mountains.
   许多鸟类已经适应了高山生活。