Cara mengidentifikasi Chestnut-bellied Partridge

Untuk mengidentifikasi Chestnut-bellied Partridge (Arborophila javanica) dengan benar, periksa setiap fitur ini. Burung bisa sulit dikenali, karena perilaku, habitat, dan panggilan sering mengonfirmasi apa yang tidak bisa dilakukan satu foto.

Ukuran sekilas

Panjang

26-28 cm

Bentang sayap

Approximately 40-45 cm

Berat

250-350 g

Ciri fisik untuk diperiksa

1. 1

   Bulu

   Warna dan pola bulu keseluruhan.

   Adults have a distinctive black crown and nape, bordered by a broad white supercilium extending from above the eye to the nape. The face and throat are black, with a prominent white patch on the ear-coverts. The upperparts are olive-brown, finely vermiculated with black. The breast is grey, transitioning to a rich chestnut on the belly and flanks, often with some white barring on the flanks. The undertail-coverts are rufous. The wings are dark brown with rufous barring. Juveniles are duller overall, with less defined facial markings and a more mottled appearance.

2. 2

   Bentuk paruh

   Bentuk dan warna paruh, tanda lapangan kunci.

   Short, stout, and slightly decurved, dark grey to blackish.

3. 3

   Warna mata

   Warna iris dan tanda khas di sekitar mata.

   Dark brown.

4. 4

   Warna kaki

   Warna kaki dan jari.

   Dull red to reddish-orange.

5. 5

   Ciri pembeda

   Ciri menonjol yang membedakan spesies ini.

   The combination of the black crown, white supercilium, black face with white ear-patch, grey breast, and chestnut belly is unique among partridges in its range. The red legs are also a good field mark.

6. 6

   Penampilan muda

   Bagaimana yang muda berbeda dari yang dewasa.

   Juveniles are duller than adults, with a less contrasting facial pattern. The black areas are often brownish, and the white markings are less pure. The chestnut on the belly is less vibrant and more mottled with grey or brown.

7. 7

   Perubahan musiman

   Variasi bulu antara musim kawin dan tidak kawin.

   No significant seasonal plumage changes are reported for this species.

8. 8

   Dimorfisme seksual

   Perbedaan antara jantan dan betina.

   Males and females are generally similar in plumage, though males may be slightly larger and have more intense coloration, particularly on the chestnut belly. Differences are subtle and not easily discernible in the field.

Tanda lapangan kunci

• Facial Pattern. Look for the striking black crown, broad white supercilium, black face, and prominent white ear-patch. This is a key identifier.
• Underparts Coloration. Note the grey breast transitioning to a rich chestnut belly and flanks. This chestnut color is diagnostic.
• Leg Color. The dull red to reddish-orange legs are a good field mark, especially when seen clearly.
• Vocalization. Its loud, resonant 'gong-gong-gong' call is often the first and most reliable indicator of its presence, even when the bird itself remains hidden.
• Habitat. Confined to montane forests of Java, typically in dense undergrowth. If you are in this habitat on Java, it increases the likelihood.

Jelajahi Chestnut-bellied Partridge