White-tipped Sicklebill

The white-tipped sicklebill's most prominent feature is its strongly decurved bill that arcs through a quarter circle; the maxilla is jello and the mandible yellow. The species is about 11.5 to 13.5 cm (4.5 to 5.3 in) long and weighs about 8.6 to 14.5 g (0.30 to 0.51 oz). The sexes are alike in plumage. Adults' upperparts are green, their throat and chest blackish, and the rest of the underparts striped green and white. The tail is mostly green, with the outer pair of feathers more dusky with white tips. Juveniles appear scaly. Voice: The white-tipped sicklebill's song is "a complex series of thin, whiny squeaks followed by some strident, high, tseep notes." There appears to be some geographic variation in it. One description of its call is "high, thin, sharp piercing tsitting notes".