Painted Lady (Vanessa cardui) on Onion.
Painted Ladies on a Rubber Rabbit Brush at North Sterling Reservoir. Part of the large 2017 Fall migration.
West Coast Lady Butterfly (Vanessa annabella) on Musk Thistle.
Monarch Butterfly (Danaus plexippus) on Musk Thistle.
Monarch Butterfly (Danaus plexippus) on Swamp Milkweed.
Viceroy (Limenitis archippus) on Teasel. I know it looks like a Monarch, but it isn’t. Notice the horizontal lines crossing the vertical lines near the bottom of the two lower wings. Fewer white spots at the edges of the wings as well. This butterfly also likes milkweed.
Queen Alexander’s Sulphur Butterfly ( Colias alexandra) on Fogfruit.
Dainty Sulphur (Natalis Iole) on Rabbitbrush.
Pink-Edged Sulphur Butterfly (Colias interior) on Rocky Mountain Bee Plant.
Grizzled Skipper (Pyrgus centaureae) (Probably)
Common Checkered Skipper Butterfly (Pyrgus communis) on Bird Foot Deer Vetch.