Our respondents readily admitted ignorance when they
did not know a bird name and frequently corrected each
other, which, following Blurton Jones & Konner (1998),
suggests that our records are reliable. We complemented
our results with the 71 Agta bird names recorded by the
DENR/Birdlife survey in the Sierra Madre in 1991
(Danielsen et al. 1994), during which researchers showed
plates from duPont (1982) to several Agta hunters in
Dinapigue and recorded their Agta name