As the remaining thugs fall or scatter under the assault of Xeshanth's magic, Tarquin casts his own spell and rushes forward with the Sothebys. His ears, now magically enhanced, strain to pick out any additional sounds from down below.

Spoiler: Actions
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Tarquin will cast Heightened Awareness and, if time allows, will make a Perception check to listen for anything moving below deck: (1d20+10)[27]

He'll walk towards the ladder down in M/12. Beak will come to rest on his shoulder for now.