A Klingon Bird-of-Prey captured by Dukat and Kira in 2372, which Dukat keeps to wage a private war on the Klingons and later flies to join the Dominion.
Dukat's Bird-of-Prey is taken in the Deep Space Nine episode Return to Grace. After a Klingon ship destroys a Bajoran outpost, Dukat and Kira arm his freighter, the Groumall, lure the raider in, and use transporters to swap crews before destroying the freighter with the Klingons aboard.
When the Cardassian government prefers diplomacy, Dukat refuses to hand the prize over and sets out to fight alone, taking his daughter Ziyal to the station first. In Apocalypse Rising he uses the ship to carry Sisko's disguised team to Ty'Gokor, destroying a Klingon vessel that challenges him on the way.
In By Inferno's Light the Bird-of-Prey leaves the fleet defending Deep Space 9 and joins the incoming Dominion ships, as Dukat announces that Cardassia has allied itself with the Dominion under his leadership.