Horsfield's Frogmouth vs Bornean Frogmouth
Batrachostomus javensis comparado com Batrachostomus mixtus
Side-by-Side Comparison
| Atributo | Horsfield's Frogmouth | Bornean Frogmouth |
|---|---|---|
| Nome científico | Batrachostomus javensis | Batrachostomus mixtus |
| Ordem | Caprimulgiformes | Caprimulgiformes |
| Família | Podargidae | Podargidae |
| Estado de conservação | Least Concern | Least Concern |
| Comprimento | — | — |
| Envergadura | 22,2 cm (8.7 in) | 23,6 cm (9.3 in) |
| Peso | 46,333333333333336 g (1.63 oz) | 46,3 g (1.63 oz) |
| Dieta | Feeds nocturnally on large beetles, millipedes, and worms; occasionally takes small lizards by ground-pouncing. | Nocturnal perch-and-pounce predator feeding on large invertebrates, small frogs, and lizards on the forest floor. |
| Tamanho da postura | 1-2 | -- |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Horsfield's Frogmouth
Melodic 'choo-choo-choo' or plaintive whistle; repeated soft notes; calls from Javan and Philippine forest at night; pitch moderate; pairs often answer each other
Bornean Frogmouth
Soft melodic hooting; 'too-too' whistle from Bornean hill forest; gentle and ventriloquial; calls at night from dense undergrowth; alarm a soft hissing exhalation
Geographic Range & Migration
Horsfield's Frogmouth
Found from the Thai-Malay Peninsula through Sumatra, Java, and Borneo to the Philippines. Resident in lowland and hill forest below 1,000 m.
Bornean Frogmouth
Endemic to the highlands of Borneo at 900–2,400 m. Found in montane forest on Mount Kinabalu and adjacent ranges. Rare.
Estado de conservação
Horsfield's Frogmouth
Bornean Frogmouth
How to Tell Them Apart
Horsfield's Frogmouth
Males grey-brown with black freckling and white scapular spots; females warm tawny-rufous with bold white-spotted wing coverts; smallest of the Southeast Asian frogmouths; Javan endemic with finely patterned cryptic plumage.
Bornean Frogmouth
Males grey-brown finely vermiculated dark; white scapular spots; females rufous-chestnut with white-buff spotting; small Borneo endemic closely resembling Sumatran Frogmouth but greyer with less contrast between crown and back.
About These Birds
Horsfield's Frogmouth
A medium-sized frogmouth (21-25 cm) found in lowland and foothill forests of the Malay Peninsula, Sumatra, Java, and Borneo. Dark brown plumage with rufous breast band. Nocturnal insectivore of dense forest undergrowth. Often detected by its distinctive whistled call.
Bornean Frogmouth
A medium-sized frogmouth (23-25 cm) endemic to the mountains of Borneo. Dark brown plumage. Nocturnal insectivore of montane moss forest. Recently split from Horsfield's Frogmouth. Limited ecological data; restricted to elevations above 600 m.