The feast of the martyrdom of Saint John the Baptist, to which the church is dedicated, dates the traditional "Duck Feast" born in 1932 in Desenzano that is celebrated with games, shows and attractions on the first Sunday of September. In that season at the end of the summer, in the chicken coops of the neighborhood the ducks were ready to be slaughtered, so nothing better to celebrate the saint than to prepare a banquet at the expense of the tasty web-footed creatures. Considering then, that in order to kill the beasts they used to cut off their head, for a sort of figurative translation, the ducks represented in the collective imagination the figure of Saint John the Baptist, dead exactly beheaded. Until a few decades ago, it was customary for the families of Capolaterra to expose to the doors of the house, towards the road, the legs and the bill of the duck tied by a flashy red ribbon. If we are allowed the expression to these poor animals, as they say in jargon, they “met their maker”; it was still the healthy will of the modest inhabitants of the neighborhood (the district Capolaterra, which goes from the area of the castle to Via Gherla, including Vicolo San Giovanni, Via A. Piatti , Via Vittorio Veneto and Via Murachette) to be present to celebrate on the day of their patron saint.