Where are my birds??

Usually, I have many birds at my feeders–all hours of the day. Lately, not a single bird morning, afternoon and evening. The CARE Center maintenance staff have been using chain saws to cut nearby trees–and a big fire as conditions permit. I wonder if that activity scared the birds away. Hummingbirds are gone–and that was to be expected. But I usually have Cardinals, and Doves, all year–and other varieties.