Sungrebe

Overview

The sungrebe (Heliornis fulica) is one of the strangest birds in the Tortuguero canal system — and one of the easiest to overlook entirely. It belongs to the family Heliornithidae (finfoots), a small, archaic family with only three species worldwide, distributed across tropical Asia, Africa, and the Americas. The sungrebe is the American representative and the sole member of its genus.

The bird looks like a cross between a grebe and a rail: slender body, small head, long neck, and boldly banded yellow-and-black feet with lobed toes. It swims low in the water, often hugging overhanging vegetation at the canal edge. Its most unusual biological feature is the male’s behavior during chick-rearing: males carry newly hatched chicks in skin pouches under each wing, shielded by specialized feathers, allowing them to fly with live young — a reproductive strategy found nowhere else in birds.

Why Tortuguero

The sungrebe is almost perfectly matched to Tortuguero’s canal system. It requires slow-moving fresh water with dense overhanging riparian vegetation — exactly what the park’s back-canals provide. The species avoids open water and agricultural canals, making Tortuguero’s shaded, forest-edged waterways one of the best places in Costa Rica to find it. Population threats from agricultural drainage and hydroelectric projects affect other parts of its range, but within the park the habitat is well-preserved.

How to see them (honestly)

• Move slowly. Sungrebes flush if a boat approaches at speed; the bird dives or retreats into overhanging vegetation.
• Look low along the waterline, not in the air. The bird typically swims with its body half-submerged, close to the bank.
• The back-canals (less-trafficked secondary waterways off the main canal) are far better than the main channel or lagoon.
• Listen for a sharp “keck” or clucking call from dense canal-edge vegetation — the bird is often heard before it’s seen.
• Early morning before tourist boat traffic begins is the best window.

Status note

Least Concern globally with stable populations through most of its range. The principal threats — agricultural conversion of tropical wetlands, hydroelectric projects, and rapid urbanization — affect the species across Latin America, but its wide distribution and the preservation of forested river systems in protected areas like Tortuguero buffer those pressures locally. Not a species in immediate danger, but one that rewards quiet, slow canal travel over fast-boat tourism.