Meanwhile, the wild crane population began a steady increase, such that in 2007 the Canadian Wildlife Service counted 266 birds at Wood Buffalo National Park, with 73 mating pairs that produced 80 chicks, 39 of which completed the fall migration, while a United States Fish and Wildlife Service count in early 2017 estimated that 505 whooping cranes, including 49 juveniles, had arrived at Aransas National Wildlife Refuge that season. A March 2018 Fish and Wildlife Service report counted an additional 161 cranes in captivity at twelve different sites, and an estimated 177 in three reintroduced flocks, putting the total current population at over 800.