I live in rural western PA. This weekend my dog whent crazy tring to do her fierce bark and sniffing around the corner of our yard. She then took off down the bank to the road and over into the abandoned yard across the street. She bounded throught the high grass (hasn't been mowed in about 3 yrs) sniffed around alot then gave up. The area she ran to was all flattened down it's about 30yds from our coop. About 3 mins later the husband sees a black bear cross to our side of the road about 120 yrds on up the lane. A friend and avid outdoors man said yes, looks like a bear layed there, but doubted it's been "staking out" the chicken coop as hubby origanally worried. I've been locking the ducks up with the chickens since they won't go to bed until late and thier coop is in the edge of the woods where my visablity is poor, and the door of the duck shack is in need of repair. Knowing black bears are very common and the home range is typically huge should I concern myself that it's hanging around? Will dumping ammonia around deter them? Is mowing that area the best solution?