Ducklett evolves into Swanna at Level 35. Retrieved from http://pokemon.answers.wikia.com/wiki/What_level_does_ducklett_evolve_into_a_swanna?oldid=336481 Ad blocker interference detected! Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers. Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.