[PvK]

Originally posted by Atrocities:
...
But up until that time there was never an offical Bird Of Prey ever listed for either the Romulans or Klingons. (However I have read that the Romulans and Klingons did continue to swap designs up unitl the battle of Khitomer which led to the destruction of the Enterprise C.)

Maybe not official (?), but I see the classic TOS Romulan ship design called "Bird of Prey" pretty consistently - for example, on this modelling web page.

Moreover, all the TOS Romulan ships had hunting birds painted on them, including the ones which used Klingon D7 hulls. I don't remember any Klingon allusions to birds at all in TOS.

PvK