i am curious and pretty sure i know the answer but am not 100 percent sure.

Has anyone ever seen a robin eat at a bird feeder? or are they strictly worms and insects type of birds, I have been a birder for a long time and help feed the locals, during summer and mainly winter, I dont ever recall seeing a robin on any of my feeders, this just struck me as odd this morning as I assembl;ed debs new outdoor canopy swing all the birds were singing and a number of them eating, i could hear the robins but not see them, thank you