Why don't you look into it, have a bit of a ferret around?

你何不调查一下，四处打探（ferret 本意雪貂，引申为打探）。

Buckbeak was ferreting around on the rocky floor, searching for bones he might have overlooked.

巴克比克在布满岩石的地上寻寻觅觅，看有没有漏掉的鸡骨头。

Sirius lapsed into silence, still staring at the cave wall. Buckbeak was ferreting around on the rocky floor, looking for bones he might have overlooked. Finally, Sirius looked up at Ron.

小天狼星陷入沉思，眼睛仍然盯着岩壁。巴克比克在布满岩石的地上寻寻觅觅，看有没有漏掉的鸡骨头。最后，小天狼星抬头望着罗恩。