Between 220 million and 270 million butterflies froze and fell from their tree roosts, covering the ground to a depth of more than a foot [30 cm] in some places.
Antara 220 juta dan 270 juta kupu - kupu menjadi beku dan berjatuhan dari sarang mereka di pohon, menutupi tanah hingga setebal lebih dari 30 sentimeter di beberapa tempat.