The reproductive process of Narwhals is a very fascinating one. The gestation period is generally between ten and sixteen months. Calves, also known as baby narwhals, are brown and have no spots but as they mature in age their colors change to become blue-gray with white spots; the calves are nursed for four months after birth. The birthing interval for narwhals is about three years (the annual population birth rate is 0.07).
With regards to courting, males often times joust their tusks to court the females. The female narwhal reaches sexual maturity about about age 6 while the male at about 9.
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