Thanks for the reply Slopeshunter. Alberta eh?
I don't know where I got Montana from...
Anyways, here's the Colorado regulation. It seems a little ambiguous in places.
EVIDENCE OF SEX, ANTLER POINTS
1. It is illegal to have or transport a big game carcass without evidence of sex naturally attached. It is illegal just to have evidence of sex accompanying the carcass.
If you plan to submit a deer or elk head for CWD testing, be sure to leave
evidence of sex on the carcass.
2. Evidence of sex is:
a. Buck/Bull: Head, with antlers or horns, attached to carcass, or testicle, scrotum or penis attached to carcass.
b. Doe/Cow: Head, udder (mammary) or vulva attached to carcass .
c. Black Bear: Male: testicles or penis. Female: vulva.
3. Heads detached from carcass are not adequate evidence of sex.
4. If a carcass is cut in pieces or deboned, evidence of sex only needs to be
attached to 1/4 or another major part of carcass. All portions must be transported together.
(This is the part that seems ambiguous to me. What exactly constitutes a "major part" of the carcass?)
5. Evidence of sex is not required when a donation certificate accompanies less than 20 lbs. of meat or after the carcass is cut into processed meat (commercially or otherwise), wrapped and frozen, or stored at licensee's home.
6. Elk antler-point compliance:
a. If you leave the head with its antlers at a taxidermist, you must get a receipt from the taxidermist, showing the date delivered and description of antlers before you take the carcass home or to a commercial processor.
b. The head or skull plate, with both antlers naturally attached, must accompany the carcass of bulls while in camp or being transported, even when the scrotum or testicles are used to meet evidence of sex requirements. (Except as in "a" above.)