The Brown-winged Parrotbill (Sinosuthora brunnea) is a parrotbill often placed with the Old World babblers (family Timaliidae) or in a distinct family Paradoxornithidae, but it actually seems to belong to the Sylviidae.
Michael participated in a project studying several of the rarest birds on Earth, including the Maui Akepa, Maui Nukupu'u, Poouli, Maui Parrotbill and the Crested Honeycreeper.