Mexican wolf M1383 was born in 2014 in the Hawks Nest pack in Arizona. For many years his fate was unknown. In the summer of 2017, a wolf pup from the Bluestem pack was captured and parentage analysis indicated that M1383 and F1042 (the alpha female of the Bluestem pack) were its parents. It is believed M1383 remained the alpha male of the Bluestem pack through 2018. At the end of 2018 all of the wolves associated with the Bluestem pack were fate unknown or had dispersed. In January 2020, M1383 was found to be traveling with female wolf F1489. These wolves had started a new pack, named Rocky Prairie. To date M1383 has sired at least 15 pups in the wild, and assisted with raising captive born cross-foster pups in 2020. In 2022 the Rocky Prairie pack was documented to be successfully denning and raising pups.