58)~ Sri Lanka Grey Hornbill ~

More about 58)~ Sri Lanka Grey Hornbill ~

*** Sri Lanka Grey Hornbill - Ocyceros gingalensis ***

Short: Endemic forest-dwelling hornbill with a large curved bill; threatened by habitat loss.

Facts:
Habitat: Wet-zone & intermediate-zone forests;
Threats: Deforestation, loss of nesting trees.

<Overview>
The Sri Lanka Grey Hornbill is a striking, endemic hornbill species found only in Sri Lanka. Recognized by its long curved bill, distinctive facial markings, and loud, echoing calls, it is one of the island’s most iconic forest birds.
Unlike the Malabar Hornbill or larger Asian hornbills, Sri Lanka’s Grey Hornbill is smaller, more agile, and well adapted to dense forest canopies.

Despite its adaptability, it remains vulnerable due to the rapid loss of mature forest habitats.

Habitat & Distribution

Primary Habitat:

Wet-zone evergreen rainforests
Intermediate-zone forests
Dense lowland forest patches

Elevation:

Sea level to mid-elevations (~1200 m)

Common Locations:

Sinharaja
Kanneliya
Kitulgala
Knuckles foothills
Udawalawa & Yala forest edges (smaller populations)

They frequently move through canopy layers in search of fruits and nest cavities.

Appearance & Identification

Size: Medium-sized hornbill.
Coloration: Grey-brown plumage, pale underparts, and darker wings.
Bill: Long, curved, creamy-yellow bill with slight serration; lacks a heavy casque seen in larger hornbills.
Eyes: Reddish-brown with a dark mask around the face.

Sex differences:

Males have lighter facial markings.
Females often have darker bills.

Their silhouette and flight style slow wingbeats and gliding make them unmistakable.

<Diet & Ecological Role>

The Sri Lanka Grey Hornbill plays a vital ecological role as a major seed disperser, helping regenerate forests.

Diet includes:

Fruits (primary diet) figs, berries, forest fruits
Insects beetles, grasshoppers
Small reptiles – occasionally geckos or lizards
Nestlings of other birds (rare, opportunistic)

Their preference for fruiting fig trees helps maintain biodiversity.
Breeding & Nesting

Hornbills have one of the most unique breeding behaviors in the bird world:

The female seals herself inside a tree cavity using mud, fruit pulp, and droppings.

She stays inside for weeks, leaving only a narrow slit for the male to pass food.
After chicks hatch, the female breaks out, and both parents feed the young.

Because they depend on large, old trees for nesting cavities, the species suffers when mature forests are cleared.

<Threats>
Major threats include:
Deforestation • loss of fruiting and nesting trees
Removal of old, hollow trees needed for breeding
Fragmentation - small, isolated forest patches reduce food and nest availability
Human-wildlife conflict occasional trapping or disturbance near villages
Climate change altering forest fruiting patterns

Although still relatively widespread, local populations decline rapidly when forest cover shrinks.

2025 November 19