A single mum celebrating her son's birthday at a park alone was taken by surprise when a family of strangers joined in to sing happy birthday.<br /><br />Ashley Giselle Jeffords, 29, wanted to make her eight-year-old son James Carlton Cooley’s birthday special despite celebrating alone.<br /><br />So after picking up a cake the pair headed to the park last Thursday (Jan 2) for a low-key celebration under the gazebo.<br /><br />As Ashley opened the cake and began preparing the candle, a father noticed James and asked his kids to join in.<br /><br />Moments later, the family of three children and their parents surrounded James singing “Happy Birthday” and making him beam with joy.