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Multiple realities
(covers information from several alternate timelines)

The following is a list of unnamed Klingon Birds-of-Prey.

By individual

By encounter

Birds-of-Prey at Nelvana III

Federation-Romulan-Klingon stand-off

Backing up the Enterprise

In 2366, these warships assisted the USS Enterprise-D in confronting two D'deridex-class Romulan warbirds near the orbit of Nelvana III. (TNG: "The Defector")

Klingon-Federation War scout

USS Enterprises with Klingon Bird-of-Prey

Scouting Bird-of-Prey

In an alternate timeline on stardate 43625.2 this Klingon Bird-of-Prey decloaked and attacked the USS Enterprise-C. The Enterprise-C's successor, the USS Enterprise-D, tried to distract the attacking Klingon ship but it continued its attack before recloaking to report its discovery of the Enterprise-C. Captain Rachel Garrett died as a result of the attack. (TNG: "Yesterday's Enterprise")

Klingon-Federation War attack group

"Attention all hands. As you know, we could outrun the Klingon vessels. But we must protect the Enterprise-C until she enters the temporal rift. And we must succeed! Let's make sure that history never forgets... the name... Enterprise. Picard out."
– Jean-Luc Picard, in the alternate timeline before the final battle with the Klingon cruisers, 2366 ("Yesterday's Enterprise")

In an alternate 2366, these three K'Vort-class battle cruisers were part of a patrol that were ordered to intercept and attack the two Federation starships USS Enterprise-C and USS Enterprise-D. The three battlecruisers attacked the Enterprise-D near the temporal rift while the Enterprise-C headed for the rift. During the battle, one of these Klingon ships was destroyed by the Enterprise-D while protecting the Enterprise-C. The two remaining K'Vort-class battle cruisers continued their attack on the now helpless Enterprise-D, almost destroying it. The timeline was restored once the Enterprise-C made its way through the temporal rift, thus ending the Federation-Klingon War. (TNG: "Yesterday's Enterprise")

Rendezvous with the USS Enterprise

Klingon bird-of-prey, TNG various

Officer Exchange rendezvous

Later that year, this Bird-of-Prey rendezvoused with the Enterprise-D so that Kurn, a participant in the Officer Exchange Program, could be beamed aboard the Federation flagship. (TNG: "Sins of the Father")

This may also be the IKS Hegh'ta, the vessel Kurn was next known to have served aboard.


Captain Ransom's encounter

In 2367, on stardate 44322.82, Captain Rudolph Ransom shadowed this Bird-of-Prey near Epsilon IV‎. After Ransom's efforts were discovered, he managed to elude the Klingons in a nearby T-Tauri nebula for three days, until stardate 44325.18, when the Klingons gave up the chase and disengaged. (VOY: "Equinox, Part II")

This Bird-of-Prey was only mentioned in dialogue.

Governor Vagh's Birds-of-Prey

USS Enterprise-D facing two Klingon Birds-of-Prey and Vor'cha

Vagh's warships

These two Birds-of-Prey, joined by an attack cruiser, were dispatched by Governor Vagh in late 2367 in response to an illegal transport of phaser rifles to the surface of Krios from USS Enterprise-D.

After Vagh informed Enterprise Captain Jean-Luc Picard that they had intercepted the transport, which suggested Federation support of the Kriosian rebels, Vagh warned the Enterprise not to leave orbit, with this vessel decloaking moments later, and along with the two other vessels surrounded the Enterprise in a standoff.

Klingon Ambassador Kell, who was at the time aboard the Enterprise, warned Captain Picard that "Vagh is fully prepared to fire upon the Enterprise." (TNG: "The Mind's Eye")

Duras-loyal warships at Qo'noS

IKS Bortas attacked by two bop

The IKS Bortas is attacked by two Birds-of-Prey loyal to the House of Duras

In the final days of 2367, the first Bird-of-Prey, loyal to the House of Duras, engaged a surprise attack on Gowron's flagship, the IKS Bortas, as it orbited Qo'noS, disabling its warp coils and aft shields with the first volley.

It was soon joined by a second vessel, and both continued to inflict heavy damage to the Bortas. At a suggestion from Lieutenant Worf, the Bortas lured the attacking ships into attempting to board, believing the Bortas crippled, while Worf targeted the disruptors manually. This succeeded in destroying one of the ships, however the other managed to raise its shields in time, allowing it to cause further damage until it was at last driven off by the sudden appearance and attack from the IKS Hegh'ta. The attack signaled the beginning of the Klingon Civil War. Fortunately, the swearing of loyalty from Kurn and four other squadron commanders ensured that Gowron would not stand alone in the war.

Because of Worf and Kurn's actions in the battle, Gowron would restore family honor to the House of Mogh. (TNG: "Redemption")

Some of the footage of these ships was taken from Star Trek III: The Search for Spock and "Yesterday's Enterprise", while other portions were new visual effects.


Duras-loyal warships at Mempa

Battle of Mempa

The IKS Hegh'ta under attack

These two Birds-of-Prey loyal to the House of Duras engaged the IKS Hegh'ta in the Mempa sector in early 2368.

Both vessels were destroyed when the Hegh'ta flew near the corona of the sun and engaged its warp drive, kicking up solar flares that destroyed these enemy vessels. (TNG: "Redemption II")

Ferengi privateer salvaged Bird-of-Prey

USS Enterprise-D under attack by two Birds-of-Prey

Lurin's Bird-of-Prey and its sister ship

This Bird of Prey was one of two salvaged ships acquired by a group of renegade Ferengi lead by DaiMon Lurin.

In 2369 the DaiMon's Bird of Prey and its sister ship attacked a Starfleet science station, which had a complement of 103 personnel, on the planet of Ligos VII. Both ships later took part in the attack on the Federation starship USS Enterprise-D. The Enterprise was able to inflict only minor damage on one of the attacking ships. The Ferengi boarded and captured the crew and beamed them onto Ligos VII to mine it. DaiMon Lurin and his men were eventually arrested when the Enterprise's away team, who were turned into children, were able to recapture the ship. (TNG: "Rascals")

Years later, following Odo's research in security breaches aboard the Enterprise, he noted to Worf of the incident, reminding him how on "Stardate 46235.7, Ferengi privateers led by DaiMon Lurin boarded and seized control of the Enterprise using two salvaged Klingon Birds-of-Prey." (DS9: "Bar Association")

General Martok's task force

These warships were among the task force consisting of "hundreds of ships" that General Martok brought to Deep Space 9 in early 2372. Upon arriving, crewmembers of these ships were granted shore leave aboard the station.

As time passed, they began conducting random searches of vessels that traveled through Bajoran space. Following the incident between the IKS M'Char and the USS Defiant over the unwarranted inspection of the SS Xhosa, these ships moved out into unclaimed space, while numerous other remained stationed around Deep Space 9.

When it eventually became clear to the Klingons that the Federation had no desire to support their proposed invasion of Cardassia, the task force cloaked and withdrew on a coarse directly for the Cardassian Empire. (DS9: "The Way of the Warrior")

Attack on the Prakesh

During the invasion, three Birds-of-Prey attacked the Cardassian Galor-class warship Prakesh, which was carrying members of the Detapa Council to Deep Space 9.

Klingon Bird-of-Prey lead ship against Prakesh

Lead Klingon ship disabled

As the Defiant entered the fray, it warned off the Klingon ships, but in response, was fired upon by the lead Bird-of-Prey. Initially, Captain Benjamin Sisko treated the Klingons with kid gloves trying only to disable their ships by firing at their engines, indeed, disabling the lead ship. Although removing one of their targets from the battlefield, their care ultimately proved ineffective.

The script describes these actions as "[the Defiant] fires a volley of phasers at the lead Bird of Prey. The Defiant knocks out the Bird of Prey's engines, forcing it to break off."

The second ship fired an aft photon torpedo at the Defiant, causing the Defiant's tactical station to fritz out. As Worf took over the station, he explained that their attempts at disabling the Klingons were proving ineffective, forcing to allow use of deadly force. Several phaser shots later, the second ship was destroyed.

For these actions, the script described "As the Defiant goes head-to-head with one of the Klingon ships. Both ships unload with everything they've got. The Defiant's shields hold, but the Klingon ship is vaporized."
Klingon Bird-of-Prey fires on Prakesh

Final Bird-of-Prey attacking the Prakesh

Before the Defiant could full engage the third Bird-of-Prey, an attack cruiser joined the battle, and kept the Defiant from defeating the final Bird-of-Prey, which only took a few phaser hits, as it continued to attack the Prakesh. Following the rescue of the Prakesh's passengers and crew, the remaining Bird-of-Prey and the attack cruiser pursued the Defiant all the way back to Deep Space 9.

Klingon Bird-of-Prey and Vor'cha at warp

Bird-of-Prey and attack cruiser that survived the battle in pursuit

En route, Gul Dukat, the rescued commander of the Prakesh, entered the Defiant's bridge, thereupon immediately seeing Lieutenant Commander Worf and stating to Captain Benjamin Sisko, "are you aware that there's a Klingon on your bridge?" Unphased, Sisko explained that "He's not the Klingon you should be worried about," before asking Jadzia Dax to "Switch to aft view [and zoom to] maximum magnification," pointing out to Dukat the two pursing vessels. Dukat suggested that they cloak immediately, but Worf pointedly added that the Defiant had lost its cloaking device rescuing Dukat.

Footage of these starships was later mirrored and used to represent the IKS Rotarran rendezvousing with the IKS Vor'nak in the DS9 Season 6 episode "Sons and Daughters".

As the Defiant came into DS9's sensor range, Miles O'Brien noted to Kira Nerys that fact, adding that "they've got two Klingon ships on their tail." As the Defiant began hastened docking procedures, Dukat thought that it looked as if "the Klingons chased us all this way for nothing," believing that "Two ships against the station? I don't think they'd risk it." Dax then pointed added that she didn't think that it was "much of a risk" and she revealed to Dukat that those ships "have got friends", as they watch the two pursuing join the waiting Klingon fleet that surrounded that station. (DS9: "The Way of the Warrior")

Klingon task force against Deep Space 9

Markot's task force returned to Deep Space 9 and after a short bit of dialogue between the two sides, the Klingons opened fire on the station, beginning the first Battle of Deep Space 9.

During the battle several Birds-of-Prey were destroyed with many others heavily damaged. It wasn't until the arrival of Federation reinforcements, along with the fact that DS9 proved capable of holding its own in battle, that the Klingons task force finally withdrew back into Cardassian space. (DS9: "The Way of the Warrior")

Bajoran sector minefield

Klingon Birds-of-Prey flushed from minefield

Two Birds-of-Prey flushed from a minefield

These Birds-of-Prey, including the IKS Korinar and the attack cruiser IKS Drovana, participated in the Klingon Empire's covert mining of the Bajoran system in 2372.

After Worf and Kurn had acquired the necessary means of detonating the minefield, the USS Defiant visited the site, warned all cloaked Klingon ships of their intentions, and detonated it. As the first grid of field erupted in explosions, two Birds-of-Prey were churned up, leading Miles O'Brien to commented that them driving out by detonating parts of their minefield was "just like flushing quail." He reported to Major Kira Nerys that the ships were "setting course 327'215, back to the Klingon Empire." Thereafter, they intended to continue to detonating the minefield, and according to Kira, she wanted to "see how many other birds we can flush out of here." (DS9: "Sons of Mogh")

Convoy 6 Bird-of-Prey

Klingon Bird-of-Prey attacking Convoy 6

Bird of Prey engaging Convoy 6

This Bird-of-Prey attacked Cardassian Convoy 6, which was being escorted by the USS Defiant.

According to Miles O'Brien, during Worf's extradition trial, "There were two Klingon ships. A Bird-of-Prey and an old battle cruiser. One would engage us while the other went after the convoy, then they'd switch, the first ship going after the Cardassians while the second ship came after us [the Defiant]." (DS9: "Rules of Engagement")

Alliance cruisers

Klingon bird-of-prey, Shattered Mirror

Two Birds-of-Prey attacking Terok Nor

Two of these Birds-of-Prey were dispatched to Terok Nor, along with the Regent's flagship, to put down the Terran Rebellion in 2372. They both failed and were destroyed in the ensuing battle. (DS9: "Shattered Mirror")

Bird-of-Prey near Ty'Gokor

Bird of Prey viewscreen

A Bird-of-Prey on the viewscreen

In early 2373, this Bird-of-Prey was encountered by Gul Dukat in his commandeered Bird-of-Prey while transporting Captain Benjamin Sisko and his crew on a covert mission to Ty'Gokor. When the holofilter Dukat normally used to impersonate a Klingon captain failed, Worf offered to speak with them. Dukat, however, chose to fire on the other Bird-of-Prey, destroying it. (DS9: "Apocalypse Rising")

Ty'Gokor fleet

Tygokor

Ty'Gokor ships

These warships, consisting of upwards of thirty Birds-of-Prey and Vor'cha-class cruisers, were among those that protected Klingon High Command at Ty'Gokor. (DS9: "Apocalypse Rising")

Borg engagement

While undergoing a neural link with the Borg Cooperative in 2373, USS Voyager's first officer Chakotay became aware of at least one, otherwise unspecified, pitched battle the Empire fought against a Borg cube of the same type that engaged Starfleet in the Battle of Wolf 359 in 2367, and in which at least two Birds-of-Prey were involved. Like their Starfleet counterparts, the Klingon squadron fared little better, suffering substantial losses. (VOY: "Unity")

The battle scene shown in Unity was stock footage from DS9: "Emissary" and "The Way of the Warrior", newly edited in post-production.
These may have been the "warships" Admiral J.P. Hanson mentioned in "The Best of Both Worlds" that "the Klingons are sending."


Gowron's fleet

On stardate 50564.2 several Birds-of-Prey were among the large contingent of Klingon warships that arrived at Deep Space 9 after falling back from Cardassian space, following the Cardassians declaration of joining the Dominion. Several more later arrived at DS9, and were among the last of Gowron's fleet to reach the station. (DS9: "By Inferno's Light")

This footage was recycled from "The Way of the Warrior".


Second Fleet

In late 2373, several Birds-of-Prey belonged to the Second Fleet.

While the Dominion attacked Deep Space 9, during the second Battle of Deep Space 9, several of these vessels crossed the Cardassian border and destroyed the Dominion shipyards on Torros III. These ships later joined with the USS Defiant and IKS Rotarran, following the evacuation of DS9, for a counterattack against the Dominion forces. (DS9: "Call to Arms", "A Time to Stand")

Operation Return

Klingon fleet joins Operation Return

The Operation Return ships

This fleet, comprised of Birds-of-Prey and Vor'cha-class cruisers, was led by Martok and Worf, after they persuaded Chancellor Gowron to contribute them to Operation Return. One of these Birds-of-Prey was destroyed by friendly fire.

The ships turned the tide on the battle and managed to outflank the Dominion, opening a hole through their lines for the Federation fleet. (DS9: "Sacrifice of Angels")

Deep Space 9 stationed warships

Klingon-Federation vessels patrol DS9

DS9 patrol

These three Birds-of-Prey, along with a Vor'cha-class attack cruiser and two Miranda-class starships, were stationed on patrol near Deep Space 9 shortly after the starbase was retaken by the Federation in 2374. (DS9: "You Are Cordially Invited") The same grouping of ships was again present at DS9 in 2375. (DS9: "Strange Bedfellows")

Luther Sloan's son's rendezvous ship

According to Luther Sloan's backstory, as the deputy director of Internal Affairs, his told of the time that his son's convoy dropped out of warp to rendezvous with a Klingon Bird-of-Prey, only to find three Dominion attack ships waiting for them instead. (DS9: "Inquisition")

This Bird-of-Prey was only mentioned in dialogue.

First Battle of Chin'toka

Numerous Birds-of-Prey participated in the first Battle of Chin'toka as part of General Martok's attack wing.

When a small squadron of Jem'Hadar fighters engaged the Federation Alliance fleet, Martok sent these warships, along with a number of attack cruisers, to engage the incoming bogeys. The Jem'hadar fighters began veering into the Klingon ships with suicide runs, inflicting considerable damage on the Klingons, managing to cripple or destroy fifteen of ships.

Once the fleet engaged the Cardassian orbital platforms protecting Chin'toka, several more ships were damaged or destroyed, while at last one orbital platform was destroyed with a Bird-of-Prey collided with platform. (DS9: "Tears of the Prophets")

Second Battle of Chin'toka

Vorcha class, aft

Two Birds-of-Prey

These Birds-of-Prey participated in the second Battle of Chin'toka. All but one were affected by the Breen energy dissipator weapon and destroyed. (DS9: "The Changing Face of Evil")

These ships were recycled footage from "Tears of the Prophets".


Stationed at DS9

Klingon warships at DS9, late 2375

Stationed at DS9

At least four Birds-of-Prey were stationed near Deep Space 9 around the time of Gowron's arrival at the station in late-2375. (DS9: "Tacking Into the Wind")

Battle of Cardassian

These Birds-of-Prey participated in the Battle of Cardassia. (DS9: "What You Leave Behind")

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