I look out my kitchen window at Amy Geese, the Canada goose that nests in my nesting box. She and her mate come to our pond every year. She lays a clutch of six eggs, and dutifully sets on them for 30-35 days. Once a day she carefully covers her precious eggs with the hay that I’ve put in the nest and the down that she has plucked from her own body, and briefly leaves the nest to get a drink and a quick bite to eat. Then it’s back to the nest where she patiently sits for day after boring day. Why does she do it?