Hunters shouldn't expect any profound changes in the upcoming deer season, although blacktail deer are still experiencing a decline. These deer, one of three subspecies in Oregon (whitetails and mule deer being the others), live in the coastal areas west of the Cascade Mountain Range. Tom Thornton, game program manager for the Oregon Department of Fish and Wildlife, says habitat loss is a problem, especially on public land where there is less logging, resulting in poor forage. Deer also are afflicted with a parasite that causes severe hair loss, often resulting in death. A louse introduced from a foreign country might be the cause.