I should mention upfront, I'm afraid of birds. I pretty much always was, but then I watched The Birds a million times and that sealed the deal.
So I called him up and said "hey, the birds are here. Are they like, starving or what?" because there is nothing for birds to eat, anywhere, unless they figure out a White Castle drive through. My Dad basically eluded to the fact that he is personally feeding all of Chicagoland's birds. So I went to the store and bought a 10 pound bag of bird seed so that I can relieve the immense pressure a metropolitan area's bird population can put on one's Dad and also... as an offering. Don't peck my eyes out.
I don't have much in the way of bird feeders so I filled an ancient one I had in the garage and filled a tray with surplus chow. I don't mind if squirrels eat it, they have had a rough winter, too. I base this on the HUGE piles of osage orange refuse at the base of most trees in my yard- not their favorite meal but in desperation.