motion in a straight line

In an experiment, a shearwater (a seabird) was taken from its nest, flown a distance 5280

km

$km$ away, and released. It found its way back to its nest 13.2

days

$days$ after release.

Part A

If we place the origin in the nest and extend the +x-axis to the release point, what was the bird’s average velocity for the return flight?