Pauraque minore

Siphonorhis brewsteri

Un abitante notturno di boschi aridi aperti e macchia spinosa. Si posa a terra da cui effettua voli fluttuanti ed erratici con le sue lunghe ali in cerca di insetti. Durante il giorno si annida nella lettiera di foglie ombreggiata, dove la sua colorazione criptica lo nasconde bene. Sia il Succiacapre di Hispaniola che il Succiacapre della Carolina sono considerevolmente più grandi, più scuri e mancano della banda bianca terminale della coda del Pauraque minore. I richiami includono un “wuck-wuck-wuck-wuck” basso e graffiante, un “tooooooeeeeeee” basso, ascendente e trillato, e un “oo-weee-oo” similmente basso e trillato, con enfasi sulla sillaba centrale. I richiami del Succiacapre di Hispaniola sono un “toooooeeeeeo” a tono più basso.

Identificazione

The least poorwill is 17 to 21.5 cm (6.7 to 8.5 in) long. The nominate subspecies' upperparts are grayish brown with blackish streaks and the folded wing shows bold white spots. It has a wide buff collar on the hindneck. The breast is dark brown with white spots and the belly white with brown bars and vermiculation. All but the central tail feathers have narrow pale tips, white in the male and buff in the female. S. b. gonavensis is thought to be smaller and paler overall.

Tassonomia

The least poorwill was previously considered conspecific with the Jamaican poorwill (Siphonorhis americana), which is now believed to be extinct. It has two subspecies, the nominate S. b. brewsteri and S. b. gonavensis.

Nome scientifico
Siphonorhis brewsteri
Autorità
(Chapman, 1917)
Ordine
Caprimulgiformi
Famiglia
Caprimulgidi
Genere
Siphonorhis

Areale e habitat

The nominate subspecies of least poorwill is found in the central and western parts of the Dominican Republic, especially Pedernales, Independencia, and Barahona Provinces, and adjoining Ouest Department in Haiti. S. b. gonavensis is found only on Haiti's Ile de la Gonâve. The species is thought to be generally rare, although it can be locally common, and is possibly under-reported. Recorded sightings are most common in the Dominican Republic, with very few in Haiti.<p>The least poorwill inhabits arid to semi-arid landscapes such as limestone woodland and areas of cactus and thorn scrub. It also occurs in deciduous, coniferous, and mixed forest. In elevation it ranges from sea level to 800 m (2,600 ft).

Migrazione
Resident species

Comportamento

Little is known about the least poorwill's feeding behavior and diet, though the latter is believed to be insects.<p>The least poorwill is believed to breed between April and June. One clutch of two eggs was laid directly on the ground with no nest.<p>The male least poorwill's song is "a whistled 'toorrrrri' rising in pitch, or a warbled 'tworrri'." The species also makes "short, whistled 'toorric' or 'to-ic'" calls and "dove-like scratchy sounds".

Conservazione

Tendenza della popolazione
declining

Foto

Distribuzione

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