Bukod diyan, “hindi mga kalapati, golondrina, o gansa” ang mga ibong ito, ang sabi ni Michael Mesure, direktor ng Fatal Light Awareness Program ng Toronto, Canada, kundi “mga uri ng ibon na papaubos na.”
Moreover, these birds “are not the pigeons, gulls, or geese,” says Michael Mesure, director of the Fatal Light Awareness Program of Toronto, Canada, but “birds with endangered populations.”jw2019 jw2019