"Feathers provided locomotor benefits" can be expressed in a variety of synonyms depending on the context of the phrase. For example, the word "locomotion" could be used instead of "locomotor," giving the sentence "Feathers provided benefits for locomotion." Additionally, the term "movement" could be utilized to denote physical activity, such as "Feathers enhanced movement ability." Furthermore, "propulsion" could indicate the force behind the movement, thus offering alternative phrasing such as "Feathers facilitated propulsion." Overall, the intended meaning of the phrase can be conveyed through different synonyms, allowing for diversification in language and added clarity in communication.