Jabiru

Identification

The jabiru is the tallest flying bird found in South and Central America, standing nearly the same height as the flightless greater rhea. Adults measure 120–140 cm in length with a wingspan of 2.3–2.8 m, weighing 4.3–9 kg. Large males may stand as tall as 1.53 m. The plumage is mostly white, but the head and upper neck are featherless and black, with a distinctive featherless red stretchable patch at the base of the neck. The long, black, broad bill measures 25–35 cm and is slightly upturned with a sharp point. Sexual dimorphism is notably high—possibly the highest of any stork—with males approximately 25% larger than females.

While the jabiru may appear ungainly on the ground, it is a powerful and graceful flier. The name "jabiru" comes from the Tupi–Guaraní language and means "swollen neck," a reference to that distinctive red patch. It is the only member of the genus Jabiru and is sometimes called tuiuiu in Brazil, or tuim-de-papo-vermelho ("red-necked tuim") in Mato Grosso.

Range & Habitat

The jabiru is found throughout the Americas from Mexico to Argentina, except west of the Andes. It sometimes wanders into the United States, usually in Texas, but has also been reported in Mississippi, Oklahoma, and Louisiana. The species is most common in the Pantanal region of Brazil and the Eastern Chaco region of Paraguay.

Jabirus live in large groups near rivers and ponds, where they forage in shallow water and find abundant prey in wetland environments.

Behaviour & Diet

The jabiru is an opportunistic feeder that consumes prodigious quantities of frogs, fish, snakes, snails, insects, and other invertebrates. It will also eat fresh carrion and dead fish, helping to maintain water quality in isolated bodies of water. They feed by holding their open bill at a 45-degree angle to the water; when prey is contacted, they close the bill and swallow. Fish around 8–20 cm are typically taken, though larger fish weighing up to 500 g and eels up to 80 cm can be captured. Jabirus detect prey more through tactile sensation than vision and usually forage by wading in flocks.

Unlike many other storks, jabirus are solitary nesters and are often seen in pairs during the nonbreeding season, suggesting a lifelong pair bond. Nests are massive stick platforms built by both parents around August–September in the Southern Hemisphere on tall trees. These nests are enlarged each season, growing to several meters in diameter and reaching depths of up to 1.8 m. Clutches contain two to five white eggs, with fledging occurring around 110 days; young often remain in parental care for another three months, making consecutive breeding seasons difficult.

Best Time & Places to See It

The jabiru is most reliably observed in the Pantanal region of Brazil and the Eastern Chaco region of Paraguay. These wetland areas provide ideal habitat with abundant shallow water and food sources. While the species is widespread across its range, it is not abundant in any single area, making dedicated trips to known strongholds the best strategy for sightings. The nesting period around August–September in the Southern Hemisphere may offer opportunities to observe breeding behavior and pairs together.

Photography Tips

Photographing jabirus requires patience and positioning near water margins where they forage. Their predominantly white plumage contrasts dramatically with the black head and red neck patch, creating striking compositions. Capture birds wading in shallow water with their distinctive bills angled down for feeding, or photograph pairs together during the nonbreeding season. The birds' large size and impressive wingspan make them impressive in flight, so watch for takeoffs and landings near nesting sites. Early morning and late afternoon light will enhance the white plumage and highlight the red neck patch. When present in flocks—particularly during the rare mouse population explosions mentioned historically—multiple birds feeding in the same field create excellent opportunities for dramatic group compositions.