I use the following nomenclature, if you use something else or spot a goof or know some of the missing info
Please

Category

Group

 Year 

Visual Differentiators

Length
inches

Width
inches

Weight lbs

Engine

Size
ci-cyl-carb

Horse Power

Classic

Classic Birds

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1955

 Flat steering wheel
 Ford and Crossed Flags Logo
  Exhaust through "Bumperettes"

175

70.3

2980

292-v8-4bl

198

1956

 Deep Dish steering wheel
 T-Bird Logo 
 Fender vents
 Porthole (Optional)
 Continental Spare Tire
 Exhaust at rear corners

185

3550

292-v8-4bl
312-v8-4bl
312-v8-2x4bl

202
225
260

1957

 Dished Bumpers, larger Grille

 Fins
 NO Continental Kit From Factory, 
 but "after market" fits are common on models.

181

3174

292-v8-2bl
212-v8-4bl
312-v8-2x4bl

312-v8-4bl
SuperCharged

212
245

270/285
300/340

Vintage

Square Birds

1958

 Name moved to front fender
 5 Squares on PowerSpear
 Honeycomb grille,
 2x2 tail lights,

205

77

3708
-
3903

352-v8-4bl
430-v8-4bl

300
350

1959

 "Spear" on door
 Horizontal  Barred Grille
 2x2 tail lights

1960

 Name on PowerSpear
 3 Squares on rear fender
 Square holed grille with Bars
 2x3 tail lights

Rocket Birds
or
Bullet Birds

1961

 4 Horizontal bars on rear fender
 Lines on Hood
  Whoosh !

205

75.9

3958
-
4130

390-v8-4bl
390-v8-3x2bl

300
340

1962

 3 Rectangles on rear fender
 This is Husky's representation -
 a strange mixture of '61 and '62 styling
 No Hood lines - No picture ! -
 Most models claiming to be '62 are  
 Customised (Johnny Lightning)
 or
 Incorrect (Husky)

1963

 3 Rectangles on doors under a line on side from lights to door.
This is Hot Wheels representation -
Note there is a variation(model) with the fender cut too high, breaking the waist line

Flair Birds
or
Chisel Birds
or
Square Birds II

1964

 Name on front fender, hood,
 and between 2x2 tail lights

205

77.1

4440
-
4590

390-v8-4bl

300

1965

 Name replaced with emblems on hood
 and between 2x2 tail lights
 "vent"  on front fender,
 Name on front fender moved to rear 

390-v8-4bl

300

1966

 "Air scoop" flattened and moved back
 Single tail Light array

390-v8-4bl

428-v8-4bl

315
345

Oval Birds
or
Glamor Birds

1967

 Emblem on grille
 Headlight doors,
 Single taillight array

 4 Door Option ( Suicide Doors )

2dr-207
4dr-209

77.3

4339
-
4649

390-v8-4bl
428-v8-4bl
429-v8-4bl

315
345
360

1968

 Cornering  lamps
 Emblems on Headlight doors,
 Single taillight array with inset indicators

 4 Door Option ( Suicide Doors )

1969

 New emblem in centre of grille
 Vertical bars on grille
 1x2 Tail lights 
 Reversing Lights beside Licence Plate

 4 Door Option ( Suicide Doors )

GM Birds

Pointy Birds
or
Bunkie Birds

1970

 Protruding Nose,
 vertical bars on  Grille,
 2x2 headlights in 4 pods

2dr-212
4dr-215

2dr-78
4dr-77.4

4545

429-v8-4bl

360

1971

 Horizontal Bars on Grille

Big Birds

Continental Birds

1972

 Horizontal Bar grille,
 Emblem at front,
 2x2 headlights in 2 pods

216

79.3

4596

429-v8
460-v8

212
224

1973

 Egg crate grille,
 Name at front,
 2x2  headlights in 4 pods, 
 Opera Windows on C Pillars (option until 6/73)
 Front Shock Absorbing Bumper

219

79.7

4742

1974

 Seat Belt Interlock
 429 engine dropped
 Front Shock Absorbing Bumper

225.7

5046
-
5101

460-v8

220

1975

 ? Rear lights changed ?

1976

 ? Gas filler moved?

LTD Birds

1977

 Vertical Opera Windows,
 Fender vents,
 headlight doors

215.5

78.5

4028
-
4356

302-v8
351-v8
400-v8

?

1978

 TBird emblem on Headlight doors,
 T-Roof  optional

1979

 Vertical bars added to grille,
 Twin  Tail lights

 SquareBirds III
or
Boxy Birds

1980

 Grille extends below Bumper,
 Numeric keypad for entry

200.4

74.1

3169
-
3270

255-v8
302-v8

?

1981

 No Grille below bumper,
 halogen lights

200-i6
255-v8
302-v8

1982

 Boring !

200-i6
232-v6
255-v8

Aero Birds

Euro Birds

1983

 Eggbox grille

197.6

71.1

3073
-
3172

232-v6
140-Turbo
302-v8

?
145
?

1984

 Getting Tricky to find anything new !

1985

 Horizontal Bar Grille, new emblem

1986

 High level Brake Light!!!

Turbo Birds

1987

 Flush Headlights,
 4x2 Hole Grille
 (Under Bumper grille on Turbo Coupe)

202.1

3133
-
3380

232-v6
140-Turbo
302-v8

?
190
?

1988

 ?

Smooth Birds
or
Super Birds 

1989

 Bumper Scoop Grille

198.7

72.7

3550

232-v6
232-v6SC
302-v8

140
210
200

1990

 ?

1991

 ?

1992

 LED Tail lights

1993

 Yawn

1994

 Thinner Headlights !

1995

 Yawn

1996

 Zzzzzzzz

1997

 Feb 28 1997
 T'Bird production halted due to
 "lack of demand"

Future Birds

1998

 Hope !

2001

 Order Time !

Retro Birds

2002