Hi, Well probably there are a couple things going on here. First, your feeder might be a bit low. Most birds can be wary of bird feeders hanging too low because of cats and other predators. Also, what are you putting in the feeder? That can make a big difference. Also, if this feeder is in a very dark spot under those trees, it may not attract too many birds. Birds like to feed in the open when they are using feeders. And, finally, it could be because you have plenty of natural food in the area. Come winter, I bet you see birds coming to your feeder. Try offering only sunflowers since they are a treat for a lot of native bird species.