这位鸟类专家在公园里发现了一种罕见的候鸟。

The ___bird-man spotted a rare migratory species in the park.

壁画上描绘了一个长着鹰头的鸟人站在山巅。

The mural depicts a hawk-headed ___bird-man standing on the mountain peak.

那位飞行员在空军服役了二十年，经验非常丰富。

The ___bird-man served in the air force for twenty years and has vast experience.