No recent studies have focused intensively on the distribution and abundance of birds in Haleakala National Park. Dunmire (1961) listed and described the bird species present in Haleakala and Hawaii Volcanoes National Parks, but gave little detailed information on distribution and abundance. The unpublished report by Warner (1967) of an expedition to Kipahulu Valley (now partly included in the Kipahulu District of Haleakala National Park) described the rediscovery of two endemic species of Hawaiian forest birds, but no other avifaunal surveys of Kipahulu took place until we began the work described here.