New York artist Kevin Sudeith has spent years carving petroglyphs into boulders along Phippsburg Land Trust trails in Maine, and the Center Pond Preserve holds one of his largest collections: more than ten life-sized birds native to the area, including a great blue heron, a cardinal, and a hermit thrush shown mid-flight. His listing also mentions a NASA Mars helicopter and a Navy destroyer, two recurring motifs in his work.