Microtines are Voles of the Genus Microtus of which there are at least
15 species in North America. Those most likely found in the Washington
State are the Meadow Vole , M. pennsylvanicus, Mountain Vole, M.
montanus, Townsend Vole, M. townsendi, Longtail Vole, M. longicaudus,
Oregon Vole, M. oregoni, Richardson Vole, M. richardsoni . There are
other voles not of the Genus Microtus that are generically called
Microtines as well. All are readily eaten by a large number of birds
including raptor, gulls, herons, and shrikes.

Regards,

Jim Prudente