The article offers information on male combat on October 21, 2020 in snakes is a sexually dimorphic trait in adults, primarily expressed during breeding periods, and under certain conditions confers reproductive advantages to winners by way of priority-of-access to sexually active females. Topics include the A. contortrix exhibit mating and male-male combat in late summer to early fall, and the male combat in wild A. contortrix has been reported outside of spring.