The researchers also looked at a structure called the lagena.

研究人员还观察了一种叫做壶结构。

The longer the lagena, the better hearing an animal has.

壶越长，动力就越好。

Shuvuuia also has a very long lagena, almost the same in relative size to a barn owl's.

龙壶也很长，其相对大小几乎和仓鸮一样。

The lagena is a curved sack that sits in an area of bones around the brain.

壶是一个弯曲囊状，位于大脑周围骨骼区。

The barn owl can hunt even in total darkness and has the longest lagena of any living bird, relative to its size.

仓鸮即使在完全黑暗环境中也能捕食，就其体型而言，仓鸮壶是所有现存类中最长。