A South Florida man's routine morning walk turned into a startling wildlife encounter after he spotted a massive Burmese python partly tucked beneath a sidewalk in Cutler Bay. What made the sight even more unsettling was that the invasive snake was guarding a nest of about 20 eggs in a residential neighborhood. What's happening? Eyi Danielo said that, while walking on Southwest 216th Street in Miami-Dade County last Saturday, he saw one section …