I flew out of Gatwick a few days after the supposed drone sighting(s). I saw a hawk hovering over a runway, which made me wonder whether someone who can't tell

I flew out of Gatwick a few days after the supposed drone sighting(s). I saw a hawk hovering over a runway, which made me wonder whether someone who can't tell a hawk from a drone raised the alarm and all other sightings were of subsequent police drone activity. Edit: it was a kestrel for those of you who are ornithologically inclined.