When in mountainous regions and near bodies of water, it's advisable to keep an ear out for these elusive warblers. They are seldom seen, typically spotted through dense undergrowth stretching three feet. We were fortunate to observe a striking male specimen perch openly for approximately five seconds. The MacGillivray's Warblers serve as the western counterpart to the eastern Mourning Warbler. Both species feature dark heads and olive green backs, but unlike the Mourning Warbler, the MacGillivray's shows a broken eye-ring.