Previous MCAFS Species of Special Concern Ranking

(Holton 1980)

Class A

Species or subspecies that has limited numbers and/or habitats both in Montana and elsewhere in North America; and elimination from Montana would be a significant loss to the gene pool of the species or subspecies.

Class B

Species or subspecies that has limited numbers and/or habitats in Montana; is fairly widespread and has fair numbers in North America as a whole; and elimination from Montana would be at least a moderate loss to the gene pool of the species or subspecies.

Class C

Species or subspecies that has limited numbers and/or habitats in Montana; widespread and numerous in North America as a whole; and elimination from Montana would be only a minor loss to the gene pool of the species or subspecies.