Straw-headed Bulbul

Tentang

The Straw-headed Bulbul (Pycnonotus zeylanicus) is a large, distinctive bulbul known for its striking straw-yellow head and loud, melodious song. It is a highly sought-after cage bird, which has unfortunately led to its severe decline in the wild. This species is endemic to Southeast Asia, preferring dense vegetation near water.

Ukuran dan masa hidup

Panjang

28-29 cm

Bentang sayap

Approximately 35-40 cm

Berat

70-100 g

Masa hidup

Up to 10-15 years in captivity, likely shorter in the wild.

Makanan

Omnivore (primarily frugivorous and insectivorous)

Ciri fisik

Bulu

Adults have a distinctive straw-yellow crown and nape, extending to the ear-coverts. The back and wings are olive-brown, with a greenish tinge. The underparts are whitish, streaked with dark brown on the breast and flanks, giving a 'scaly' appearance. The throat is white, contrasting with the yellow head. The tail is olive-brown with a broad, dark subterminal band and pale tips.

Bentuk paruh

Relatively stout, slightly decurved bill, dark horn-colored to black.

Warna mata

Dark brown.

Warna kaki

Dark grey to blackish.

Ciri pembeda

The most striking feature is the bright straw-yellow crown and nape. The heavily streaked breast and flanks are also characteristic. Its large size for a bulbul is also notable.

Penampilan muda

Juveniles resemble adults but have duller plumage, with a less intense yellow on the head and less distinct streaking on the underparts. The overall coloration is more muted.

Perubahan musiman

No significant seasonal plumage changes are observed.

Dimorfisme seksual

Males and females are generally monomorphic in plumage, making visual sexing difficult. Males may be slightly larger and have a more robust head, but this is not a reliable field mark.

Cara identifikasi

1. 1

   Head Coloration

   Look for the unmistakable bright straw-yellow crown, nape, and ear-coverts. This is the most diagnostic field mark.

2. 2

   Underparts

   Observe the whitish underparts with heavy dark brown streaking on the breast and flanks, creating a 'scaly' effect.

3. 3

   Size

   Note its relatively large size for a bulbul (28-29 cm), larger than most other bulbuls in its range.

4. 4

   Vocalization

   Listen for its loud, rich, and melodious song, which is highly distinctive and often heard before the bird is seen.

5. 5

   Habitat

   Search in dense vegetation near water bodies in lowland forests, especially riparian zones and swamp forests.

Habitat dan persebaran

Bioma

Tropical and subtropical moist lowland forests, freshwater swamps, peat swamp forests, riparian forests.

Persebaran geografis

Historically found in Peninsular Malaysia, Singapore, Sumatra (Indonesia), and Borneo (Indonesia, Malaysia, Brunei). Currently, its range is severely fragmented and restricted to very few, often protected, areas.

Rentang ketinggian

Typically found in lowlands, from sea level up to approximately 600 meters.

Lingkungan yang disukai

Prefers dense undergrowth and secondary growth near water bodies such as rivers, streams, and swamps. It is often found in areas with abundant fruit-bearing trees and shrubs.

Perilaku

Waktu aktivitas

Diurnal.

Kebiasaan makan

Feeds primarily on fruits (especially figs and berries) and insects. It forages in the canopy and mid-story, often gleaning insects from foliage or catching them in short aerial sallies. It also consumes nectar from flowers.

Perilaku sosial

Usually seen singly or in pairs, sometimes in small family groups. They can be quite shy and secretive, often remaining hidden within dense foliage, though their loud calls can reveal their presence.

Pola terbang

Flight is typically strong and direct, often undulating over short distances. It can be quite agile when moving through dense vegetation.

Pola migrasi

Resident species; no known migratory patterns.

Teritorialitas

Pairs are territorial, especially during the breeding season, defending their nesting and foraging areas with vocalizations.

Reproduksi

Musim kawin

Varies geographically, but generally between February and August, peaking during the wet season when food resources are abundant.

Kebiasaan bersarang

Builds a cup-shaped nest, typically in a fork of a tree or shrub, often near water. The nest is constructed from twigs, rootlets, leaves, and fibers, often lined with finer materials.

Jumlah telur

2-3 eggs.

Deskripsi telur

Typically 2-3 eggs per clutch. Eggs are pale pinkish-white to creamy, heavily spotted and blotched with reddish-brown or purplish-brown, particularly at the broader end.

Masa inkubasi

Approximately 13-15 days.

Masa terbang

Chicks fledge around 14-18 days after hatching.

Perawatan orang tua

Both parents participate in nest building, incubation, and feeding of the young.

Di mana ditemukan

Tips lapangan

1. Listen for its song. The Straw-headed Bulbul's loud and distinctive song is often the first indication of its presence. Learn its vocalizations to aid in detection.
2. Patience and stealth. This species is shy and often remains hidden in dense foliage. Move slowly and quietly, and be prepared to wait patiently in suitable habitat.
3. Early morning/late afternoon. Like many forest birds, they are most active and vocal during the cooler parts of the day, at dawn and dusk.
4. Use binoculars. Essential for observing details of plumage and behavior when the bird is often obscured by vegetation.

Spesies serupa

Fakta singkat

Conservation Status:

Critically Endangered (CR)

Key Identification Mark:

Straw-yellow head

Primary Diet:

Fruits and insects

Habitat Preference:

Dense vegetation near water in lowland forests

Vocalization:

Loud, rich, melodious song

Fakta menarik

• The Straw-headed Bulbul is considered one of the most melodious songbirds in Southeast Asia, leading to its severe exploitation in the illegal pet trade.
• Its critically endangered status is almost entirely due to trapping for the cage bird trade, rather than habitat loss, although habitat degradation also plays a role.
• Despite its large size for a bulbul, it can be surprisingly elusive and difficult to spot in its dense forest habitat.
• The species name 'zeylanicus' is misleading, as it refers to Ceylon (Sri Lanka), where the bird does not occur. This is likely due to an early misidentification or mislabeling.

Klasifikasi ilmiah

Kerajaan

Animalia

Filum

Chordata

Kelas

Aves

Ordo

Passeriformes

Famili

Pycnonotidae

Genus

Pycnonotus

Spesies

Pycnonotus zeylanicus

Jelajahi Straw-headed Bulbul