Comment Comment by nightshift1 Also interesting: https://gizmodo.com/a-viral-new-bird-song-in-canada-is-causi...White-throated sparrows across Canada are rapidly replacing their classic three-note song ending with a new two-note version, which originated in British Columbia and has spread eastward over the past two decades. parent nightshift1 1 month ago
White-throated sparrows across Canada are rapidly replacing their classic three-note song ending with a new two-note version, which originated in British Columbia and has spread eastward over the past two decades.