 On the Big Island, a smaller species of "Porzana" is now known from subfossil bones found on the southwestern slope of Mauna Kea, but this bird was only the size of a Laysan crake; it may have been the bird named "iao" or "iao", which would place its extinction at a relatively recent date.Also, there are some bones of a third species, approximately 15% larger than "P. sandwichensis", found near Kailua-Kona.The generally accepted theory is that the lighter birds represent immatures, and certainly only such specimens have been described as young birds (the Hanover specimen is labeled as "juvenile"), but since the exact collection localities are not known with sufficient detail, only DNA analysis could resolve this question, particularly since the recovered bone material can also be expected to yield analyzable DNA fragments.