Another confab with the Walking Lady this morning on the way to the wifi. We compared birdseed. I've got the right stuff--sunflower seeds. It's always fascinated me that some birds eat small stones that end up in the gizzard and help to grind up the seeds they swallow whole. The pigeons and sparrows I feed gobble up my sunflower seeds as fast as they can. This isn't any leisurely lunch! They have to get any available food down as fast as possible or go hungry. Then, later on, the gizzard can do its thing. It's a beautiful system.