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LONDON, ENGLAND - SEPTEMBER 22: Stag rut at Richmond Park on September 22, 2016 in London, England. Today marks the first day of autumn, also known as the autumn equinox, where night and day are equal. (Photo by Jack Taylor/Getty Images)

LONDON, ENGLAND - SEPTEMBER 22:  Stag rut at Richmond Park on September 22, 2016 in London, England. Today marks the first day of autumn, also known as the autumn equinox, where night and day are equal. (Photo by Jack Taylor/Getty Images)