[6] This then meant that the total world population of L. hamiltoni was less than 300 individuals living in a small pile of rocks on Stephens Island.

[6] Recent studies of mtDNA from all four extant Leiopelma species do not support the results of the allozyme analysis, however; the genetic difference between L. pakeka and L. hamiltoni is no greater than that seen between different populations of Archey's frog (L. archeyi), which calls into question the designation of the Maud Island frog as a separate species.

[8] L. pakeka is classed as taxonomically indistinct in the 2017 version of the New Zealand Threat Classification System, due to three independent genetic analyses finding it to be minimally differentiated from Hamilton's frog.

[11] In 1984–85 100 frogs were transferred by the Department of Conservation to a different part of Maud Island, successfully starting a new colony.

[12] This was more successful than a 2006 translocation of 100 to nearby Long Island; Motuara contained better habitat and frogs there were protected by a kiwi-proof fence.