Anyone wanna tell me what the heck is going on here?

The leaves are in the cowl,getting blown up and over into the vents.
Kind of tough to clean out,but it can be done. I first use a hose to spray it out as much as possible. Then compressed air,and a shop vac used from the inside. There are also drain holes on each side of the cowl. Make sure they are clean,so the cowl will drain water.