Question

why owl is active at night

Answer 1

Owls have excellent vision and hearing, both of which help them excel at nighttime hunting. In addition, the cover of darkness helps nocturnal owls avoid predators, as well as to attack prey, principally because their feathers hardly make any noise when they fly, Devokaitis said

Answer 2

because they can see better at night as it has more cones than cylinders in their eyes.