Which anatomical feature strongly suggests *Troodon* was active primarily at night or in low light?

Answer

Remarkably large eye sockets (orbits)

The size of its eye sockets relative to its skull suggests superior vision, leading experts to conclude that *Troodon* was active predominantly during nocturnal or crepuscular periods.

Which anatomical feature strongly suggests *Troodon* was active primarily at night or in low light?
dietdinosaurPrehistoricTroodon