Crested Serpent-Eagle (Spilornis cheela)

The Crested Serpent-Eagle is a powerful forest raptor, easily recognized by its prominent crest, broad wings, and striking yellow eyes. As its name suggests, it specializes in hunting snakes and other reptiles, playing a crucial role in controlling reptile populations within Sri Lanka’s forests.

🌎 Habitat & Distribution
🌳 Habitat

This eagle inhabits lowland and mid-elevation wet zone forests, forest edges, and clearings. It prefers dense tree cover for nesting and roosting, while hunting often occurs over open areas within the forest. It is highly adaptable to forested landscapes but relies on intact wet zone habitats for successful hunting and breeding.

📍 Distribution

In Sri Lanka, the Crested Serpent-Eagle is mainly observed in Sinharaja Forest Reserve, its buffer zones, and other wet zone forests. Although somewhat widespread, it is often seen alone, gliding silently over forest canopies or perched high in tall trees, scanning for prey.

🦅 Behavior
Feeding Behavior

As a diurnal predator, this eagle primarily feeds on snakes, lizards, amphibians, and small mammals. It often soars above the canopy, using its keen eyesight to detect movement, before descending rapidly to capture its target. Its hunting style is both stealthy and highly efficient, reflecting adaptations for reptile predation.

Social Behavior

The Crested Serpent-Eagle is typically solitary, forming pairs only during the breeding season. It maintains territorial boundaries, often vocalizing to signal presence. During the day, it roosts quietly in dense tree foliage, remaining largely unseen.

Vocalization

Its call is a loud, piercing whistle, often repeated in series, especially during courtship or territorial defense. These vocalizations carry over long distances, signaling the presence of a dominant bird in the area.

Breeding & Nesting

Nesting occurs in tall forest trees, where a large stick nest is built, usually hidden within dense foliage. Clutches typically contain 1–2 eggs, with the female performing most of the incubation. Both parents contribute to feeding and caring for the chicks until they fledge. Intact forest habitats are crucial for breeding success.

⚠ Conservation Status

Crested Serpent-Eagles are classified as Least Concern, yet they are vulnerable to deforestation, habitat fragmentation, and human disturbance. Preservation of wet zone forests is essential to support their populations and maintain ecological balance.

📸 My Wildscape Encounter

I observed the Crested Serpent-Eagle alone, photographing it with a Canon 80D paired with a 150–600 mm lens. Witnessing this raptor glide silently and hunt with precision was an unforgettable experience, highlighting the importance of patient observation and respect for forest predators.