Absence of Birds

There has been a dearth of birds this fall. Nothing at the feeders for months. Finally, this a.m. there are several species flying around. I am wondering if it is because of the above normal temperatures. I think I will check how much feed is in the box and maybe stock up a little. Last night the weather people were discussing the long range forcasts for this area. They are anticipating even a mild (to a degree) January but look out Feb. and March.