Wheat@mariusstrom Any incandescent bulb will do. Put it beneath the feeder if possible (heat rises). If you have them, you could alternatively tape a hot hands hand warmer to the bottom of your feeder. That works in a pinch, but of course, the hand warmers only give off heat for a few hours.
Marius@wheat yep, I literally have not a single incandescent available to me, we’ve been 100% led in the house for years. This’ll be next week’s problem and solution- I have one with a small incandescent on order