"Summer in the Yakima Valley"

The poem "Summer in the Yakima Valley" by Ruth Roach Pierson has a lot of great examples of contrast. The first half of the poem the speaker talks about how everything in the day she loved, she mentions how she loves "the farmhouse on the hill". and how his cousin and him where giddy "on the danger of going too near the whirlpool pull of the main pipe's undertow.
But when it gets dark out, everything changes he was scared "his cousin leaving him listening alone to the sounds of the night". At night he sits there listening to the sounds of a coyote's hungry cry, the twist and scrapes of the tumbleweed like a wind- tossed tangle of bones over clay-dry earth." In line 44 he is still scared during the dark he lay's there and preys to the sick ache, the hunger for home as nightmare shadows slid across the floor .