Scale-throated Hermit
Phaethornis eurynome
Only large hermit hummingbird in its range with black feathers on the throat giving it a scaled appearance. The bill is slightly curved. The back is olive-green and it has a strong mask. The tail is long and white-tipped. Similar to Dusky-throated Hermit, but Scale-throated Hermit is bigger with a longer tail. Found in the understory of humid and montane forests.
Identification
The scale-throated hermit is about 14 to 14.5 cm (5.5 to 5.7 in) long. Males weigh 4.5 to 6 g (0.16 to 0.21 oz) and females 4 to 5 g (0.14 to 0.18 oz). This medium-sized hermit is olive green above with grayish underparts. Its dark throat whose feathers have lighter edges give the eponymous scaly appearance. The face has a black "mask" with a pale supercilium and gular stripe. Its tail feathers have white tips and the middle pair are longer than the others. The sexes are similar but the female has shorter wings and a less strongly decurved bill. The two subspecies have identical plumage but P. e. paraguayensis is significantly smaller than the nominate.
Taxonomy
Though the scale-throated hermit is a member of the large genus Phaethornis it seems to have no close relatives. It has two subspecies, the nominate P. e. eurynome and P. e. paraguayensis. A third proposed subspecies, P. e. pinheiroi, has not been accepted by most taxonomists. The supposed "black-billed hermit", described as P. nigrirostris, was proven to be a mutant P. eurynome with an all-black bill.
- Scientific name
- Phaethornis eurynome
- Authority
- (Lesson, RP, 1832)
- Order
- Apodiformes
- Family
- Trochilidae
- Genus
- Phaethornis
Range and habitat
The nominate subspecies of scale-throated hermit is found in southeastern Brazil from southeastern Bahia south to Rio Grande do Sul. P. e. paraguayensis is found in eastern Paraguay and northeastern Angentina's Misiones Province. It inhabits the understory of a variety of landscapes within the Atlantic Forest biome including lowland and montane rainforest, semi-deciduous forest, and mature secondary forest. In elevation it has been recorded from 100 to 2,250 m (330 to 7,400 ft).
- Migration
- Resident species
Behavior
The scale-throated hermit is assumed to be sedentary but data are lacking.<p>The scale-throated hermit is a "trap-line" feeder like other hermit hummingbirds, visiting a circuit of a wide variety of flowering plants for nectar. It also consumes small arthropods.<p>The scale-throated hermit's breeding season in Brazil spans from September to March but has not been defined in the rest of its range. Its nest is a long cone-shaped cup made of plant fibers and spider web suspended under a long drooping leaf. They are often decorated with the lichen Spiloma roseum that stains the eggs and nesting female red. The clutch of two eggs is incubated by the female alone.<p>The scale-throated hermit's song is variable, "but typically comprises 2–4 notes, e.g. 'tsi-tseee....tsi-tseee..' or 'tsi-tsu-tseeé...tsi-tsu-tseeé...' etc." Its calls include "a plaintive 'tsew' and a more upslurred 'tsee'."
Conservation
- Population trend
- declining
Photos
Distribution
Bird Calls
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