A raptor, painted on a Romulan Bird-of-Prey.
A raptor is a predatory bird, also referred to as a "bird of prey."
Imagery of the raptor was present on ancient Vulcan, where a huge faction of the population "marched beneath the raptor's wings." They were against the teachings of Surak, and killed him using atomic weaponry. (ENT: "The Forge")
- This was intended to refer to the Romulan culture.
The Romulans and Klingons both used spacecraft classified as "Bird-of-Prey." (TOS: "Balance of Terror"; Star Trek III: The Search for Spock)
The Klingons also had Raptor-class starships in the 22nd century. (ENT: "Sleeping Dogs")