Soaring birds get most of their energy from currents of rising air, not flapping their wings. So it’s plausible it did a lot of soaring over land, assuming it c

Soaring birds get most of their energy from currents of rising air, not flapping their wings. So it’s plausible it did a lot of soaring over land, assuming it could get in the air under its own power. Human-built gliders can fly thousands of kilometers in one go, admittedly uncomfortably and geographically constrained. But easily hundreds of kilometers on a day with good conditions, with a good degree of navigational freedom.