Genetic evidence showed there is only one swift parrot population, so threats at different times and places can potentially act on the entire population. Although expert opinion has estimated the species population size as approximately 2,000 individuals, recent genetic evidence suggests this is overly optimistic, and that the (minimum) census size of the population may be lower than 300 individuals.
Genetic evidence indicates a single swift parrot population, making it vulnerable to threats at different locations and times. While experts previously estimated the species' population size to be around 2,000 individuals, new genetic data suggests this estimate is too high, with the minimum population likely being less than 300 individuals.