‘Io (Hawaiian Hawk): ...‘Io or Hawaiian Hawk (Buteo solitarius) Hakalau Forest National Wildlife
http://www.stanford.edu/~petelat1/io.html id=spl-1

Bird Photo Gallery: Red-footed Booby, Great Frigatebird, Black-crowned Night-Heron, Hawaiian Coot, Hawaiian
http://www.stanford.edu/~petelat1/ id=spl-2

TAXONOMY: BUTEO, SPECIES AND SSP - SOLITARIUS, SCIENTIFIC NAME - BUTEO SOLITARIUS AUTHORITY -
http://fwie.fw.vt.edu/WWW/esis/lists/e101007.htm id=spl-5

Nä Mea I Heluhelu 'Ia: Kamehameha Schools Press: Honolulu, Hawai'i, 1988. Griffith, Curtice R. Biology
http://www.uatuahine.hawaii.edu/hana/NaManu/extras/heluhelu.html id=spl-6

ADW: Buteo solitarius: Classification: Buteo solitarius (Hawaiian hawk). Classification. ... Parent taxa. pictures sounds. Genus
http://animaldiversity.ummz.umich.edu/site/accounts/classification/Buteo_solitarius.html id=spl-7

ADW: Buteo: Classification: ...legged buzzard). Species Buteo rufofuscus (jackal buzzard). Species Buteo
http://animaldiversity.ummz.umich.edu/site/accounts/classification/path/Buteo.html.html id=spl-8

Hawaii Images 2002: ...see the 1999 images. Plants, Animals, and other stuff. Scenery. Io, the Hawaiian
http://artemis.austincollege.edu/acad/bio/sgoldsmith/hawaii02_images.htm id=spl-9