This sound effect can be found on the Flock of Birds Sound Effects Library, which was made by Sound Ideas. It’s the same track as Sound Ideas, BIRD, HAWK - SPARROW HAWK: SINGLE: CALLING, ANIMAL, but repeated six times (with two of them cut to only the second half).
Despite being labelled as a sparrow hawk sound, the sound effect was most likely voiced by an American kestrel, which in turn, is actually a falcon and not a hawk, which most likely explains the sound effect's "sparrow hawk" moniker as "sparrow hawk" is a colloquial name for the American kestrel.