You seem to know a lot about weasels. Have you any good information about longtails. Does anyone you know target them? My goal is to catch some of those big ermine. the literature says they should around most regions!
Look for Richardson ground squirrel colonies, 1000 animal size ones. Then you have found the location. The western long tail is different from the eastern long tail, you can feal the hide differences. Soon someone will do some DNA to show the two species. Any long tails that I have handled have a flea only found on Richardsons GS, so they spend a lot of time down their burrows in the winter. There is a one pound sleeping dinner there, and fleas are not going to be eaten, but go to the warm prey.
Do your jurisidictions not have restrictions on trapping them ?
Alberta has NO Possesion of any weasel with a tail over 4.5 inches for market.(there are a lot of females with pleated tails) Ironically the females are the same size as male short-tails, and get overlooked.