A few of my chickens that are about 17ms old seem to have new feathers coming it. They are downy like and they seem to be losing feathers are they molting?
Sounds like it! I've got several molting now, and if they are in a "hard" molt, you will most definitely see feathers everywhere - like a pillow fight! Sometimes they molt lightly and you don't see that many feathers, though.
I came home yesterday to find one of my pens that had some of one year old cochins in it with feathers everywhere. At first I panicked, thinking something must have gotten in the pen but then I realized they just had decided to start molting that day!!
Also explains why they haven't been laying too well the past couple of weeks