I'm from the Rio Grande Valley in NM. None of those varmints here.
Glad you have never seen them
BISON-M - Long-tailed Weasel - Mustela frenata
www.bison-m.org/booklet.aspx?id=050860
NEW MEXICO: Three subspecies have been confirmed in New Mexico: Mustela frenata arizonensis (Mearns); M. f. neomexicana (Barber and Cockerell); and M. f. nevadensis (Hall) (NMDGF, 1990)
GENERAL DISTRIBUTION The long-tailed weasel has a broad geographic and ecologic distribution, occurring from South America to Alaska and from desert to Alpine zones in western North America. NEW MEXICO In New Mexico M. frenata has been recorded from the lower Gila, Rio Grande, and Pecos valleys and from as high as 12,000 feet in the Sangre de Cristos. These weasels are often seen among rocks (where they may be hunting small rodents), in montane meadows, in irrigated farmland, in brush piles, and in woods-edge situations *31*.
New Mexican long-tailed weasels show conspicuous geographic variation. Those from Bernalillo County southward have dark facial coloration interrupted by white patches between the eyes and between the eyes and the ears, often resulting in an isolated blackish or brownish mask across the eyes and narial area, which is distinctly set off by surrounding white fur. This masked pattern characterizes the race M. f. neomexicanus, as well as other races in the arid Southwest and Mexico southward at least to Guatemala. Long-tailed weasels from the Jemez and Sangre de Cristo mountains lack this mask, as do all M. frenata from the central and northern Rocky Mountains (race M. f. nevadensis). While Hall (1951) noted intergradation between the masked and unmasked condition in a specimen from central Arizona and one from Willow Creek, Mogollon Mountains, New Mexico, his description does not convince us that intergrades were involved. Our specimen from the Jemez Mountains has a few white hairs between the eyes, but in no other way do we see any evidence of intergradation between masked and non-masked patterns. If such intergradation does indeed occur, it must be in a distance of 35 miles between the Sandias on the one hand and the Jemez and Sangre de Cristos on the other *31*.
http://www.bison-m.org/booklet.aspx?id=050860