Which tribe in the Philippines were head-hunters and cannibals?

"In days past, the Kalinga were known as voracious headhunters and cannibals, who would carry out long standing vendettas against rival tribes. Kalinga custom dictated that before a young Kalinga could become a full-fledged warrior, he had to taste the blood of his first victim."

[bpre.gov.ph/artistclub/News.asp?code=0000000022&CMonth=10&CYear=2003&categ=Features] Link no longer exists

See also: http://www.kashgar.com.au/articles/headhunting