I think this may be a case of making sure everybody is
making the same measurements. I'm guessing it the beak
measurement that's causing the confusion.

There are two different bill measurements that can be made.
One is the exposed culmen which goes from the base of the
bill to the tip. The second is nalospi (sometimes just
"culmen" which can be confusing) which is from the distal
part of the nares to the bill tip. Nalospi is consider
the more non biased measuremnt and is what Johnston used.

The Montana Crow
wing tail exp cul
30.5 17.7 5.1

Measurements for crows in Johnston
wing tail nalospi
male 32 (30-33) 17.5 (16-19) 3.6 (3.4-4.0)
female 31 (28-32) 17 (15-18) 3.4 (3.0-3.8)

Crows from Pyle
male 27.7-33 15.3-18.8
female 27.2-31.7 14.7-17.9
Pyle lumps nalospis at 2.8-4.0

Ravens (C.c.sinuatus) from Pyle
male 41.2-44.0 22.5-25.0
female 39.0-42.5 21.8-24.2
lumped nalospis = 4.2-5.2

However, Johnston included exposed culmen measurements for
Crows made by Ridgway and by Howell:

exp cul
male Ridgway 51.5 (48-53.5)
Howell 51 (47-54)
female Ridgway 48 (45.5-50)
Howell 45.8 (45.5-46)

Note that the nalospi measurements for ravens are the same as
the exposed culmen measurements for crows. I suspect that the
measurements taken by the rehab folks were exposed culmen
measements, but the references they're using are for nalospi.
So, once apple are compared to apples and oranges to oranges,
this bird fits neatly into the American Crow camp.

--
Mike Patterson
Astoria, OR
celata at pacifier.com

If you want to end war and stuff, you've got to sing loud
- Arlo Guthrie