Cara mengidentifikasi Sooty-headed Bulbul

Untuk mengidentifikasi Sooty-headed Bulbul (Pycnonotus aurigaster) 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

19-21 cm

Bentang sayap

28-32 cm

Berat

25-35 g

Ciri fisik untuk diperiksa

1. 1

   Bulu

   Warna dan pola bulu keseluruhan.

   Adults have a distinctive sooty-black head and nape, contrasting sharply with a clean white throat and upper breast. The back and wings are olive-brown, and the underparts are whitish to pale grey, becoming bright yellow on the vent and undertail coverts. The tail is dark brown with white tips on the outer rectrices.

2. 2

   Bentuk paruh

   Bentuk dan warna paruh, tanda lapangan kunci.

   Slender, slightly decurved, and black.

3. 3

   Warna mata

   Warna iris dan tanda khas di sekitar mata.

   Dark brown.

4. 4

   Warna kaki

   Warna kaki dan jari.

   Dark grey to black.

5. 5

   Ciri pembeda

   Ciri menonjol yang membedakan spesies ini.

   The combination of a sooty-black head, white throat, and bright yellow vent is diagnostic. The white tips on the outer tail feathers are also a good field mark.

6. 6

   Penampilan muda

   Bagaimana yang muda berbeda dari yang dewasa.

   Juveniles resemble adults but have a duller, more brownish-grey head, less distinct white throat, and paler yellow on the vent. Their plumage is generally softer and less defined.

7. 7

   Perubahan musiman

   Variasi bulu antara musim kawin dan tidak kawin.

   No significant seasonal plumage changes are observed.

8. 8

   Dimorfisme seksual

   Perbedaan antara jantan dan betina.

   Males and females are monomorphic in plumage and size, making them difficult to distinguish visually in the field.

Tanda lapangan kunci

• Head and Throat Coloration. Look for the striking contrast of a sooty-black head and nape against a clean white throat. This is the most reliable field mark.
• Vent Color. Observe the bright yellow undertail coverts (vent). This yellow patch is prominent and diagnostic.
• Back and Wing Color. Note the olive-brown coloration of the back and wings, which contrasts with the head and underparts.
• Tail Tips. Look for white tips on the outer tail feathers, especially visible when the bird fans its tail.
• Vocalizations. Listen for its characteristic cheerful, bubbling, and chattering song, often including 'kutilang-kutilang' calls.
• Habitat. Often found in open, disturbed habitats, gardens, and urban areas, making it a common sight in human-modified landscapes.

Jelajahi Sooty-headed Bulbul