Answer:
What is red and nailed to a wall?
A man shot two arrows at its center and missed both times, but using a sword swung once at its center and hit it twice.
I am mother and father, but never birth or nurse. I'm rarely still, but I never wander.
No matter how little or how much you use me, you change me every month.
Kills the bad ones and the sad ones. Tightens to fit, so one size fits.
I fly to any foreign parts assisted by my spreading wings. My body holds an hundred hearts Nay I will tell you stranger things when I am not in haste I ride and then I mend my pace anon.