birding...

According to the IOC there are 35 species of Puffbirds, Nunbirds and allies in the family Bucconidae; they are:

White-necked Puffbird Notharchus hyperrhynchus
Guianan Puffbird Notharchus macrorhynchos
Buff-bellied Puffbird Notharchus swainsoni
Black-breasted Puffbird Notharchus pectoralis
Brown-banded Puffbird Notharchus ordii
Pied Puffbird Notharchus tectus

Chestnut-capped Puffbird Bucco macrodactylus
Spotted Puffbird Bucco tamatia
Sooty-capped Puffbird Bucco noanamae
Collared Puffbird Bucco capensis

Barred Puffbird Nystalus radiatus
White-eared Puffbird Nystalus chacuru
Striolated Puffbird Nystalus striolatus
Caatinga Puffbird Nystalus maculatus

Russet-throated Puffbird Hypnelus ruficollis

Crescent-chested Puffbird Malacoptila striata
White-chested Puffbird Malacoptila fusca
Semicollared Puffbird Malacoptila semicincta
Black-streaked Puffbird Malacoptila fulvogularis
Rufous-necked Puffbird Malacoptila rufa
White-whiskered Puffbird Malacoptila panamensis
Moustached Puffbird Malacoptila mystacalis

Lanceolated Monklet Micromonacha lanceolata

Rusty-breasted Nunlet Nonnula rubecula
Fulvous-chinned Nunlet Nonnula sclateri
Brown Nunlet Nonnula brunnea
Grey-cheeked Nunlet Nonnula frontalis
Rufous-capped Nunlet Nonnula ruficapilla
Chestnut-headed Nunlet Nonnula amaurocephala

White-faced Nunbird Hapaloptila castanea

Black Nunbird Monasa atra
Black-fronted Nunbird Monasa nigrifrons
White-fronted Nunbird Monasa morphoeus
Yellow-billed Nunbird Monasa flavirostris

Swallow-winged Puffbird Chelidoptera tenebrosa