And He sent against them flocks of birds.
He sent upon them swarms of birds
And He sent against them flights of bird
And send against them birds in flocks
And He sent on them flying/birds (in) flocks/groups gathered and following each other
By sending upon them birds with…
And send flocks of birds upon them
And HE sent against them swarm of birds
And He sent on to them (ambient) swarms of birds
And He sent against them flocks of birds
And sent against them birds, in flocks