I am writing this at 10:40 a.m., though it will not post until 1 this afternoon. But right now, in our tiny patio garden, a goldfinch is breakfasting happily on seeds dug out of sunflower planted by other birds during the winter. Goldfinches have visited our yard before, usually for the same reason. It seems that if we have sunflowers in the yard, goldfinches will know about it. But no goldfinches actually seem to live around here. There are plenty at Tinicum Marsh, which is about a 20-minute drive from here. So how do they find out, I wonder. Birds have wings, of course. So maybe they just do reconnaissance flights. They may just be smarter and less the prisoners of "instinct" than we think.