Just a thought... that real dense undercover is great for a hiding place for the birds from hawks and such, but it's also a really good hiding place for snakes, foxes, raccoons, skunks, etc. I share because you might, once they get established, eliminate the really low to the ground branches...
Have you called your Dr and told him about your hearing loss? First thing I wondered was if its possibly a reaction to your meds? Never heard of anyone losing hearing from an oncoming cold. Maybe it wouldnt hurt to call and ask.