 However, no one has demonstrated a complete understanding of any combination of climate, soil, tree variety, insects, viruses or genetic mutation that may produce the effect.Bird's eye maple is most often found in "Acer saccharum" (sugar maple), but millers also find bird's eye figure in red maple, white ash, Cuban mahogany, American beech, black walnut, and yellow birch.Trees that grow in the Great Lakes region of Canada and the United States yield the greatest supply, along with some varieties in the Rocky Mountains.