Connecticut warbler
Chapter 7: When to Sing, and How
Subchapter: Night singing
From page 128 in the book.
Photo by Brian E. Small
♫532. What a surprise, that (presumably) unpaired male Connecticut warblers sing through much of the night. Accompanied by spring peepers and distant barred owls. About midnight on May 30, 2016. Sax-Zim Bog, Minnesota. (16:50)