I'm actually not sure, but I do it all the time.  I wouldn't do it during hunting season.  The only dead head that I know is illegal for you to possess without first having inspected and sealed is bighorn sheep.

a skull only yes but one with anterlers attached it is a big NO

Thanks guys

Critter, can you take the skull with antlers to the DOW and request ownership or would that just be a stupid idea?

I haven't heard or read if you can do that yet in Colorado.  I know of a real nice 6x6 bull skull and antlers that was confinscated at the USFS building in Minturn, Co. a few years ago.  One of the workers had brought it out and it was in front of one of the employe housing houses. 

Arizona I believe is the same as Colorado.   

Now I do know that in Utah if you find one you need to get the gps location of it and report it to the DOW and then they will check it out and if all is well they will issue you a permit to have it.  That doesn't do you any good when you find it down in the bottom of some nameless canyon that you don't want to hike back into but at least if you want it that bad you can get it.   

I did not know that about Utah. I guess I have some GPS coordinates to get and turn in...LOL

Thanks Critter. I just read that . I guess I should read the entire thing now.