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The Yellow-breasted Green Pigeon (Treron flavicollis) is a medium-sized, arboreal pigeon found in various forest habitats across its range. It is characterized by its predominantly green plumage, with males exhibiting a distinctive yellow breast and a grey head. These pigeons are primarily frugivorous, playing an important ecological role as seed dispersers.
Size & lifespan
- Length
- 25-29 cm
- Wingspan
- 45-50 cm
- Weight
- 150-200 g
- Lifespan
- 5-10 years (estimated in the wild)
- Diet
- Frugivore
Physical characteristics
- Plumage
- Males have a grey head, a bright yellow breast, and a greenish-yellow belly. The back and wings are olive-green, often with a purplish-maroon patch on the shoulder (less prominent than in some other Treron species). The undertail coverts are rufous. Females are generally duller, lacking the bright yellow breast and grey head, being mostly olive-green with a yellowish wash on the underparts. Both sexes have a yellowish-green orbital ring.
- Beak shape
- Relatively short and stout, pale greenish-yellow to bluish-grey with a darker tip.
- Eye color
- Inner ring blue, outer ring red.
- Leg color
- Red to purplish-red.
- Distinguishing features
- The combination of a grey head and bright yellow breast in males is unique among green pigeons in its range. The rufous undertail coverts are also a good field mark.
- Juvenile appearance
- Juveniles resemble females but are generally duller, with less distinct markings and often a more uniform greenish plumage. The yellow on the breast, if present, is very faint.
- Seasonal changes
- No significant seasonal plumage changes are noted for this species.
- Sexual dimorphism
- Pronounced. Males are much more brightly colored with a grey head and yellow breast. Females are predominantly olive-green and lack these prominent features.
How to identify
- 1
Male Plumage
Look for the distinctive combination of a grey head, bright yellow breast, and olive-green body. The rufous undertail coverts are also a key feature.
- 2
Female Plumage
Females are harder to identify, being mostly olive-green. Look for the yellowish-green orbital ring and the overall shape and size consistent with a green pigeon. Absence of strong markings helps distinguish from other Treron females.
- 3
Vocalization
Listen for its soft, mournful, whistling coo, which is a good indicator of its presence, especially when the bird is hidden in foliage.
- 4
Habitat and Behavior
Observe its arboreal habits, feeding on fruits in the canopy of forests or forest edges. Its shy nature means it's often heard before it's seen.
Habitat & range
- Biomes
- Subtropical or tropical moist lowland forests, subtropical or tropical mangrove forests, and subtropical or tropical moist montane forests.
- Geographic range
- Found in Southeast Asia, including parts of Myanmar, Thailand, Malaysia, Singapore, Indonesia (Sumatra, Borneo, Java, Bali), and the Philippines (Palawan and associated islands).
- Elevation range
- Typically found from sea level up to 1,500 meters, occasionally higher.
- Preferred environments
- Prefers primary and secondary evergreen forests, forest edges, mangroves, and sometimes cultivated areas with fruiting trees. Often found in the canopy or sub-canopy.
Behavior
- Activity time
- Diurnal, most active during the morning and late afternoon.
- Feeding habits
- Primarily frugivorous, feeding on a wide variety of fruits, especially figs (Ficus species). They forage in the canopy, often hanging upside down to reach fruit. They swallow fruits whole and are important seed dispersers.
- Social behavior
- Usually seen singly or in pairs, but can gather in small flocks at abundant fruiting trees. They are generally shy and inconspicuous.
- Flight pattern
- Direct and swift, often with rapid wing beats. Can be quite agile when maneuvering through dense forest canopy.
- Migration pattern
- Resident throughout its range, with no significant migratory movements. Local movements may occur in response to fruit availability.
- Territoriality
- Not strongly territorial outside of the breeding season, but pairs may defend a small area around their nest during breeding.
Song & calls
- Song
- A series of soft, mournful cooing notes, often described as a 'whistling coo' or 'hoo-hoo-hoo-hoo' that ascends slightly in pitch. It can be quite melodious.
- Call
- Various soft 'coo' calls, sometimes a low 'grrr' or 'gurgle' when agitated. A distinctive 'whistle-coo' is often heard.
- When they vocalize
- Most vocal during the breeding season, but calls can be heard throughout the year, especially in the early morning and late afternoon.
Breeding & reproduction
- Breeding season
- Varies geographically, but generally between March and September, peaking during the dry season or early wet season.
- Nesting habits
- Nests are typically a flimsy platform of twigs, placed high in a tree or shrub, often well-concealed by foliage. Both parents participate in nest building.
- Clutch size
- 1-2 eggs.
- Egg description
- Usually one or two white, elliptical eggs.
- Incubation period
- Approximately 14-17 days.
- Fledging period
- Chicks fledge around 10-12 days after hatching.
- Parental care
- Both male and female share incubation duties and care for the young, feeding them 'crop milk' initially, then regurgitated fruit.
Where to find
Primary and Secondary Forests
Look in the canopy and sub-canopy layers of evergreen forests, especially where fruiting trees (like figs) are abundant.
Forest Edges and Mangroves
Can also be found at the edges of forests and in mangrove habitats, particularly in coastal regions.
Botanical Gardens and Parks
In some urbanized areas, they may visit large parks or botanical gardens with suitable fruiting trees.
Field tips
- Listen for calls. Their soft, whistling coo is often the first indication of their presence. Learn to recognize this call.
- Scan fruiting trees. Focus your search on trees that are currently bearing fruit, especially figs. These pigeons are often well-camouflaged among the leaves.
- Be patient and quiet. Yellow-breasted Green Pigeons are shy. Move slowly and quietly, and use binoculars to scan the canopy thoroughly.
- Look for movement. Even if camouflaged, their movements as they feed or shift position can give them away.
Similar species
Little Green Pigeon
Treron olax
The Little Green Pigeon is smaller and lacks the grey head and yellow breast of the male Yellow-breasted Green Pigeon. Males have a distinctive maroon mantle and greyish-green underparts. Females are mostly green.
Pink-necked Green Pigeon
Treron vernans
Males of the Pink-necked Green Pigeon have a pink neck and orange breast, which are absent in the Yellow-breasted Green Pigeon. Females are similar to female Yellow-breasted Green Pigeons but often have a more yellowish wash on the underparts and lack the distinct greyish head.
Large Green Pigeon
Treron capellei
The Large Green Pigeon is significantly larger and has a more robust bill. It lacks the grey head and yellow breast of the male Yellow-breasted Green Pigeon, being more uniformly olive-green with a yellowish belly.
Quick facts
- Diet:
- Frugivorous
- Habitat:
- Forest canopy, forest edges, mangroves
- Sociality:
- Solitary or in pairs, small flocks at food sources
- Conservation Status:
- Least Concern
- Key Male Feature:
- Grey head, yellow breast
Fun facts
- Green pigeons are known for their ability to swallow large fruits whole, thanks to their distensible gape, making them crucial seed dispersers.
- The genus name 'Treron' comes from ancient Greek, meaning 'pigeon' or 'dove'.
- Despite their bright plumage, they are remarkably well-camouflaged in the forest canopy, blending in with the leaves.
Scientific classification
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Aves
- Order
- Columbiformes
- Family
- Columbidae
- Genus
- Treron
- Species
- Treron flavicollis
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