Black-and-white Warbler

Cornell’s All About Birds

Pigtail August 26, 2011 Photo by Richard Orr

Pigtail August 26, 2011 Photo by Richard Orr

Henryton (PVSP) May 1, 2016 Photo by Kevin HeffernanHenryton (PVSP) May 1, 2016  Photo by Kevin Heffernan

Henryton (PVSP) May 1, 2016 Photo by Kevin Heffernan

Centennial Park May 1, 2014 Photo by Bonnie Ott

Centennial Park
May 1, 2014
Photo by Bonnie Ott

Middle Patuxent Environmental Area May 3, 2013 Photo by Howard Patterson

MPEA
May 3, 2013
Photo by Howard Patterson

Black-and-white Warbler

MPEA May 2, 2023 Lauren Crocker

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.