Mourning Warbler

Cornell’s All About Birds

Marriottsville (PVSP)
May 20, 2005
Photos by Bill Hubick

MPEA
August 21, 2013
Photo by Howard Patterson

Blandair Park
May 25, 2019
Photo by Tony VanShoor

Woodstock
May 19, 2024
Photo by Russ Ruffing

Schooley Mill Park May 19, 2025 Steve Luke

While not necessary for common species, it is good to get into the habit of including photographs and recordings/spectrographs so that you do it for uncommon species that require more documentation.