Great blue heron
Chapter 7: When to Sing, and How
Subchapter: Night singing
From page 126 in the book.
Photo by Marie Read
♫513. Hoarsely, several herons trumpet their fraaahnk, fraaahnk, fraak, fra calls from an overnight roost. At 1:30, a black-crowned night-heron calls, quark. January 29, 2006. Shark Valley, Everglades National Park, Florida. (2:16)