I'iwi - Vestiaria coccinea coccinea

http://www.fs.fed.us/psw/rsl/projects/wild/ralph/ralph7.pdf 

http://biology.usgs.gov/pierc/HFBIDPSite/DisDenIIWI_Obs.html - an area limited but detailed distribution description.

http://nationalzoo.si.edu/Animals/Birds/Facts/FactSheets/fact-iiwi.cfm - one of a number of concise overviews probably useful for high school projects.

http://www.state.hi.us/dlnr/dofaw/cwcs/files/NAAT%20final%20CWCS/Chapters/Terrestrial%20Fact%20Sheets/Forest%20Birds/iiwi%20NAAT%20final%20!.pdf 

http://audubon2.org/webapp/watchlist/viewSpecies.jsp?id=108 -similar

http://www.hawaii.gov/dlnr/consrvhi/forestbirds/iiwi1.html - even more brief...

http://www.fs.fed.us/psw/rsl/projects/wild/ralph/ralph9.pdf 

http://biology.usgs.gov/pierc/HFBIDPSite/Central_Windward_OFR_2005-1441.pdf 

  iiwisong1;  iiwisong2  ;   iiwicall8;  iiwicall9  ;  iiwilong1 (~550 Mg) ;  iiwilong2 (~950 Mg)