(See also a Scale Chart of these Birds-of-Prey.)
The Pagh, appearing in the episode
"A Matter of Honor" is the first
Bird-of-Prey type ship seen on Star Trek:
The Next Generation, (The Klingons in "Heart of
Glory" flew a K'Tinga-class ship and the
Talarian Batris) and it is an eye-opener.
Evidently the Klingons had increased the size of their
ships.
Seen in the above shot, the wingspan of the Bird-of-Prey is visually about equal to the radius of the Enterprise's lower phaser strip. A quick measurement against my Blueprints says this is 140m. According to perspective, the BoP would have to be at least this wide, more if even further away. The BoPs appear to have a constant length/wingspan ratio of 0.87, giving the Pagh a length of 121m. These are the minimum values, might this be Star Trek: Deep Space Nine Technical Manual's K'Vort with a 780.62m wingspan seen at a great distance?
No, as the next scene (separated from the above by a
commercial break) shows a nose-to-nose alignment.

Although the Pagh is beginning to rotate to its
departure vector, comparing its foreshortened length to
half the length of the Enterprise saucer (194.18m,
acording to the
Star Trek: The Next Generation
Technical Manual) gives a length of 180m.

Above thePagh has rotated to its maximum extent.
comparing the foreshortened wingspan to the length of the
Enterprise's saucer gives a wingspan of 157m and a
corresponding length of 137m

Above the Pagh recieves treatment from the
Enterprise. We have a full half of the
Enterprise's primary saucer in this shot.
Comparing the BoP to the
DS9TM figure
of 231.86m for half a Galaxy width gives a length
of at least 109m. It is not quite apparent from this
angle, but the BoP's wings are in
"cruise" rather than "attack" mode,
as seen below.
.
The greatest length from this measurement is 180m with a corresponding wingspan of 207m. This comfortably exceeds the minimum required for the perspective shots. This can be taken as a near approximation of the true size of the Pagh.
The First Officer stands beside the Captain's chair, on a dias between the shock supports. Unknown stations behind the Captain. Continuing counterclockwise to the Captain's right, an access door to the bridge, forward of that is the tactical station (seen in the second picture), forward of that is another manned station of unknown purpose. Presumably a viewscreen is in front of the Captain, although it isn't shown. Somewhere to the Captain's left is the Science Officer's station. Finally, on the port side of the aft wall, is another door to the bridge.
Other spaces on the ship include:
A fool's errand to try to count the crew, TV production cannot dress more than a dozen Klingons for an episode. Nevertheless, eight are seen in the dining scene. Assuming a bridge crew of five, the compliment is at least thirteen (fourteen with Riker)
When readying weapons to attack the Enterprise, they speak of photon torpedoes and phasers. From the plural on torpedoes, we may assume more than one tube. The argument can be made that they did not have enough weapons to realistically defeat the Enterprise in combat; they simply wanted their ship gloriously destroyed in battle before the microscopic lifeform ignobly devoured it.
Sent to accompany the Enterprise at Picard's request in "The Defector", these BoPs (the one on the left being behind the Warbird) form the basis of the DS9TM's "large economy size" model.
Measuring against the Warbird and using the numbers for it found in the DS9TM (I believe these numbers are too small, but, then, this is a "mere" B-Type Warbird) we see the BoP would have a wingspan of at least 520m compared with Warbird's 772.43m. Note the wings are in "cruise" position. From diagrams, I estimate the "cruise" wingspan is 1.2 times the "attack" wingspan. This gives us a standard wingspan of 433m and a length of 377m, both expanded in the DS9TM to give a comfortable distance in this shot.
None seen, not even on a comm screen.
Unknown.
Unknown, although these three BoPs and the Enterprise are enough to give two Romulan Warbirds pause.
Too bad the Vor'cha attack cruiser wasn't built this season. Fans sometimes talk of redoing episodes a la the Star Wars Special Editions, perhaps a Vor'cha could be inserted over these BoPs, although it would also be out-of-scale large. Perhaps paste two K'Tingas over the scene, even in front of the Warbirds, suggesting they are hovering over the Enterprise rather than trying an englobement.
.
A lone ship, identified only as a Bird-of-Prey

From the Universe of the Fed-Klingon War in "Yesterday's Enterprise".
The BoP in the first picture is firing on the Enterprise-C (possibly the first time a BoP is seen firing with its wings out of "attack" position). This means, amazingly, that it is still beyond the Enterprise-C. Its wingspan is about 4/7th the visual size of the Ambassador-class ship's length, (526 m according to the Star Trek Encyclopedia) meaning a 300m wingspan and a 220m length, at least. The distant K'Vort in the second picture appears about the same.
Unknown
Unknown
Unknown
Klingon vessels Vorn and Buruk holding stations at thirteen kilometers, at least according to the dialog. I'm going to ignore what I hear and base this on what I see; two BoPs forming up beside a Vor'cha that is almost nose-to-nose with the Enterprise.

Enterprise viewscreen. If not for the previous
establishing shot above, I could acccept this as a
triple split-screen with a magnification of each distant
ship. However, I'm going to use it as an undistorted
view for a check on the sizes derived from the first view.
Note: These will be maximum values, as the BoPs are in each case closer to the camera than the Vor'cha.
Using the DS9TM's
481.32 length and 341.76
wingspan for the Vor'cha (which seem accurate) I
scale the BoP on the left at about 320m wingspan,
while the one on the right looks larger, 210m for half
the wingspan or 420 overall. This gives lengths of 230
or 310 respectively.
The viewscreen shows them both at a 390m wingspan
(larger than the Vor'cha). In standard format
these would be 280m long by 325m beam.

A clear perspective shot. The nearest looks to be about
equal to the Vor'cha, about 430m long max. The
farther one looks to be 280m minimum. Assuming both
claimants arrived in the same size ship, it would be in
the 280-310 range.
Worf confronts Duras in either his quarters or ready room and demands the Right of Vengeance. They seem to repair to a larger, even more sparsely furnished room (a cargo hold?) to duel. There is no audience, so no one hears Duras taunt that if he is killed there will be no one to clear the Worf family name.
Only the few Klingons lounging about with Duras are seen.
Unknown.
.
I have only seen "Rascals" once, and I have no
intention of seeing it again. I do have a CD-ROM with
the trailers for every ST:TNG episode.
("Next time on Star Trek: The Next Generation...")
It shows the clip above. I'm going to assume the whole
show recycled effects from
"Yesterday's Enterprise".
(Incidently, ever since seeing this trailer, a week
before "Rascals", I assumed this was a subtle
hint that this episode should not be taken seriously.
Ferengi flying Klingon ships? C'mon!)