Its stunning, extremely curved bill makes the Buff-tailed Sicklebill immediately identifiable except where it overlaps with White-tipped Sicklebill. Both species exhibit white tips to the retrices, but the base of the Buff-tailed’s retrices are buff-colored, where the White-tipped’s would be white. Buff-tailed Sicklebills also possess an exquisite blueish-teal patch on the side of the nape. They inhabit the shaded understory of humid and wet forests, especially near Heliconia stands and along streams. Sicklebills have a large altitudinal range but where they are most common, Buff-tailed Sicklebils favor open, cultivated, or disturbed habitat. They are particularly abundant in disturbed foothills surrounding the Río Napo of eastern Ecuador.