Painted Lady Butterfly (Vanessa cardui): Painted ladies migrate from northwestern Mexico. Their migration varies tremendously from year to year depending on rainfall amounts and breeding success. Some years, we see very few here in MT. However, with a half dozen or more spotted within the past week, it appears we may be in for a big painted lady year in 2017! Photo by Glenn Marangelo on 5/20/17 at the National Bison Range, MT.