Frost was born in California, but after the death of his father he moved to Massachusetts (Pritchard). Frost considered himself a native New Englander. One critic referred to him as the "Voice of New England" (Waggoner). Due to his life in New England, one major theme in his writings was nature. An example is "Birches". The speaker in "Birches" saw some birch trees that had been blown over by an ice storm. This reminds the speaker of when he was a child swinging from the trees. Frost included very distinct descriptions of the storm and the child playing in the birches (Magill 722-723). His poems dealt with the irreversible change of the seasons (Liebman). Frost wrote many more poems that deal with nature. In fact, the first poem in his first book and the last poem of his final book are both about encounters with nature. Some say Frost was a common American writer who was in love with nature, such as James Fenimore Cooper. However, others say the woodsman he wrote about as "independent, defiant of urban artificially and at one with nature was one of his conceptions of himself." His poems about nature portray many different themes. Frost used the woods as a place that could be used "for restoration of spirit through vigorous activity and communion with nature". Frost refers to the perils and joys of isolation in nature (Magill 717).