avian

The scientist specializes in avian biology, specifically the migration patterns of geese.

(Chinese) 这位科学家专门研究鸟类生物学，特别是大雁的迁徙模式。

The zoo is building a new avian sanctuary to protect endangered tropical birds.

(Chinese) 动物园正在建造一个新的鸟类保护区，以保护濒临灭绝的热带鸟类。