From: Star Trek: The Original Series
Caption: Ornithoids: Sylvia and Korob.
Origin: extragalactic. Slight beings only inches tall, alien to human-type emotions but capable of matter manipulation with a replication/transporter technology dubbed "transmuter" which is used to assume different forms on the many higher-gravity worlds they encounter. Along with being featured on a wallchart in Keiko's Deep Space Nine school, the extragalactic Ornithoids once discovered on Pyris VII a century earlier were once the subject of Jake's homework. Captain James T. Kirk encountered two Ornithoids, Korob and Sylvia in 2267.