ROLAND H. WAUER, a retired National Park Service ranger, continues his work in the field as a naturalist, scientist, and resource specialist. He is author of Birder's Mexico and Heralds of Spring in Texas. He lives in Victoria, Texas. CARL M. FLEMING served for some thirty years as natural resource specialist for Big Bend National Park, the Grand Canyon, the Big Thicket National Preserve, and other U.S. parks. Now retired from the National Park Service, he lives in Alpine, Texas.

ROLAND H. WAUER, a retired National Park Service ranger, continues his work in the field as a naturalist, scientist, and resource specialist. He is author of Birder's Mexico and Heralds of Spring in Texas. He lives in Victoria, Texas. CARL M. FLEMING served for some thirty years as natural resource specialist for Big Bend National Park, the Grand Canyon, the Big Thicket National Preserve, and other U.S. parks. Now retired from the National Park Service, he lives in Alpine, Texas.

ROLAND H. WAUER, a retired National Park Service ranger, continues his work in the field as a naturalist, scientist, and resource specialist. He is author of Birder's Mexico and Heralds of Spring in Texas. He lives in Victoria, Texas. CARL M. FLEMING served for some thirty years as natural resource specialist for Big Bend National Park, the Grand Canyon, the Big Thicket National Preserve, and other U.S. parks. Now retired from the National Park Service, he lives in Alpine, Texas.