What is the mood of river at beginning its journey in poem Rio Minho

In the poem "Rio Minho", the mood of the river at the beginning of its journey is one of youthful exuberance and eagerness. The river is described as "a clear stream, / Born in the mountains, / Fed by the melting snow." This imagery conveys a sense of purity and vigor, as well as a hint of the adventures that lie ahead for the river as it embarks on its journey. The river is full of energy and enthusiasm, and it seems eager to explore the world and discover all that it has to offer.