Who knew a breakfast food would have the kind of charisma that would inspire thousands to actually celebrate it? But every year droves of revelers come to watch a parade that gives homage to eggs. First begun in the early 1900s in honor of National Egg Day, the Butter and Eggs Day parade and festival in Petaluma is now a huge affair, drawing 30,000 people. This year’s event is on April 27, 10 a.m.–5 p.m., in downtown Petaluma. The parade, which contains more than 130 entries, will start at noon. The festival will feature live music, art and crafts vendors, the popular Cow Chip Throwing Contest and, for kids, the Cutest Chick Contest. For details, see petalumadowntown.com/butter-and-egg-days-parade.html.