Duarte signed a contract with the Falcons on Saturday, Will McFadden of AtlantaFalcons.com reports.
Duarte has appeared in just one regular-season game in the league since being selected by the Dolphins during the seventh round of the 2016 NFL Draft. He'll be a longshot to make the 53-man roster, but will be able to provide depth while fellow reserve tight end Jaeden Graham tends to a knee injury.