The “socially acknowledged and nature-loving town” of Bolinas is ever-present in singer-songwriter Jeff Manson’s new release “Wild Form,” but that is not all. The alt-country effort, released last month on a new micro label that Mr. Manson helped establish, invites listeners on an evening stroll through his Big Mesa neighborhood while contemplating larger themes. He incubated the songs while freewheeling about town with his infant son, Otis, inspired by such things as the chirping of…