Based on those little pellets of soil being there, it's something making a tunnel into the ground, not something emerging from the ground after pupating or whatever.
|Viola pubescens var leiocarpa, maybe.|
I hope you like them, because I sure do, so you're going to be seeing a lot more of them.
|Erythronium albidum (pretty sure it's not the yellow kind)|
Coming soon: sprouting acorns and a mushroom movie!