Compost Squash

The mystery volunteer squash that sprouted out of our compost bin is growing really well, better than any of the other squash plants growing properly in our raised bed.  I'm a bit skeptical of how this will turn out, because I thought that our compost had too much green stuff and not enough brown stuff.  It's hard to get brown stuff when we hardly have any trees around to supply us with dry leaves.  We also have not been turning the compost much for aeration.  Doesn't that mean everything inside, including the roots of this squash, will just rot and get yucky?  But so far, this plant doesn't seem very aware of its perilous environment.

In fact, I even spotted a few female flowers last weekend, including this little baby.  I'm thinking that this might be a spaghetti squash?  This is our first year growing any type of winter squash, so it's all new to me!