Flock
A flock was a term for a large group of animals.

In 1996, Henry Starling suggested that Rain Robinson might have detected a flock of geese rather than a UFO. ()

In 2267, Esteban Rodriguez claimed to have seen a whole flock of birds on the Shore Leave Planet. ()

In 2373, a hologram of  claimed to see a flock of starlings, among other things, in the lamp light reflecting off a wall. ()
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Biology