Answer:
Birches.
Step-by-step explanation:
A Pastoral poem is the one in which it creates a contrast between the corruption of city life and the purity of the rural life. This poem presents the Utopian view of rural life and explores the relationship between human and nature.
"Birches" is the poem written by Robert Frost, first published in 1916. Written in blank verse, it explores the idealism of nature. It talks about the Birch tree,which is bend. While tramping in the forest,the poet notices this bend birch tree. He ponders that the tree is bend because ice had been frozen on it. Then he then thinks the tree is mend because some boys have swung on it, because he himself in his childhood did the same. Then he imagines how the boy must have climbed the tree while looking for his cows(depicting the life of a shepherd looking for his sheep). While imagining all this the poet thinks of going in this idealized life, away from the life of an adult. and live carefree.
As, this poem contains the elements of nature, the life of a shepherd, we can say that this poem is an example of traditional pastor.