Synonyms for Lark (same or very similar meaning)
WordNet sense 1 (play boisterously):
cavort, disport, frisk, frolic, gambol, rollick, romp, skylark, sport, lark aboutWordNet sense 2 (North American songbirds having a yellow breast):
meadowlarkWordNet sense 3 (a songbird that lives mainly on the ground in open country; has streaky brown plumage):
pipit, titlarkWordNet sense 4 (any carefree episode):
escapadeFrom the ODE community, based on WordNetadd/edit