In the quiet of the woods the bubbling song of the Ruby-crowned Kinglet erupted, and the high trill of the Brown Creeper signaled its presence. The hormonal drive to breed had birds singing regardless of the weather.
Many birders still call the Tundra Swan the Whistling Swan (C. c. columbianus), which is actually the North American subspecies of Tundra Swan, which was named by Meriwether Lewis after he heard the whistling sound of its wings.
