As early as mid-afternoon Friday, birders from across the region began to gather for the Bristol Bird Club's 10th Annual Birding Weekend at Natural Tunnel State Park north of Gate City in Scott County, VA. Some are camping, some staying at the lodge. Several lingered well into the evening before chasing a thunderstorm home. Still others have made arrangements to come early Saturday and Sunday to provide field trips for the public and help BBC celebrate the annual International Migratory Bird Day which is being staged by birders throughout the Western Hemisphere. Field trips begin daily at 8:30 a.m.