One of the things I love about living in the country is that it's bursting with stuff to look at and identify and such. Every year I find new flowers that I had never noticed before. This is one.
It's a golden corydalis. [Corydalis aurea]. I love the Latin name. It literally means golden corydalis. That doesn't happen a lot.
Another common name for this plant is scrambled eggs. Charming, huh.
It's a short plant. When I saw these they were no more than 4 inches tall. Wiki says they get about 18 inches tall, but ours didn't seem to get more than 8 inches tall or so after it warmed up some more.