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The Iberá in April

April is autumn in the wetlands. This is what happens in the Iberá this month and what to know before you travel.

The best time to visit the Iberá begins (April to November). The weather turns pleasant and the dirt roads firm up.

Season

The high season of the Iberá is from June to October. Winter (June to August) is a very good time: low water, concentrated wildlife, cool weather and no mosquitoes. Long weekends and July are the peaks of occupancy: book in advance. The low season (January to March) has extreme heat but also very active wildlife at dawn.

Weather

The Iberá has a humid subtropical climate. Average temperature in January: 27°C, in July: 16°C. Absolute highs exceed 40°C in summer. Frosts are possible between June and August. It rains all year round, around 1,400 mm annually. Rain is concentrated between autumn and spring (March, April and October are among the wettest months) and winter is the driest part of the year, with August the driest month.

Mosquitoes

Mosquitoes are most active in summer (December to March) and at dusk. With proper repellent and lightweight long clothing they are not a real problem. In the cold months (May to August) there are practically no mosquitoes. The lodgings in the Iberá always have mosquito nets.

Only at this time of year

They are only around for part of the year, and this month is one of them.

Yellow Anaconda
Only at this time of year
Yellow Anaconda
Eunectes notaeus

Spring to early autumn (October to April).

Black laurel
Only at this time of year
Black laurel
Ocotea acutifolia

The fruit ripens between January and April, when bird activity in the crowns of the laurels reaches its peak.

Argentine Black-and-white Tegu
Only at this time of year
Argentine Black-and-white Tegu
Salvator merianae

Exclusively from spring to summer (September to April).

Sharp-billed Canastero
Only at this time of year
Sharp-billed Canastero
Asthenes pyrrholeuca

A visitor of the cold months (autumn and winter) in the tall grasslands and reed beds.

White-banded Mockingbird
Only at this time of year
White-banded Mockingbird
Mimus triurus

An austral autumn-winter visitor (it does not nest in Iberá; it breeds farther south).

Tropical Kingbird
Only at this time of year
Tropical Kingbird
Tyrannus melancholicus

A summer visitor, abundant from October to April.

Golden Liophis
Only at this time of year
Golden Liophis
Erythrolamprus semiaureus

October to April.

False Water Cobra
Only at this time of year
False Water Cobra
Hydrodynastes gigas

October to April, in the heat.

Parrot Snake
Only at this time of year
Parrot Snake
Leptophis ahaetulla

October to April in the forest patches.

Lichtenstein's Green Racer
Only at this time of year
Lichtenstein's Green Racer
Philodryas olfersii

October to April.

Rio Tropical Racer
Only at this time of year
Rio Tropical Racer
Palusophis bifossatus

October to April, early in the morning.

Buff-winged Cinclodes
Only at this time of year
Buff-winged Cinclodes
Cinclodes fuscus

Autumn and winter (April to August) when it descends from the Andes.

Migration

Migratory species passing through or arriving in the Iberá at this time.

Silver Teal
Migration
Silver Teal
Spatula versicolor

Year-round, with greater abundance in autumn and winter when migratory individuals join.

American Golden-Plover
Migration
American Golden-Plover
Pluvialis dominica

Autumn and spring during migration (March to May, and August to October).

Sábalo (streaked prochilod)
Migration
Sábalo (streaked prochilod)
Prochilodus lineatus

The mass migrations of sábalo occur in autumn.

At its best

They are here all year, but this is their moment of greatest presence or activity.

Seven-banded Armadillo
At its best
Seven-banded Armadillo
Dasypus septemcinctus

Year round, with the best chances on sunny spring and autumn afternoons.

Paja colorada (red marsh grass)
At its best
Paja colorada (red marsh grass)
Andropogon lateralis

However, its moment of maximum splendor and scenic glory occurs strictly during the autumn (from March to June).

Mbocayá palm (macaúba)
At its best
Mbocayá palm (macaúba)
Acrocomia aculeata

The large clusters of fruit hang ripe during the autumn and winter months, becoming a critical resource for survival for the larger and smaller fauna of the wetland when resources are scarce in the rest of the woodland.

Paja brava (giant marsh grass)
At its best
Paja brava (giant marsh grass)
Panicum prionitis

It records its moment of greatest chromatic drama during the autumn and winter months (from April to August), when the panicles ripen and tint the landscape an old, deep gold.

Tala (spiny hackberry)
At its best
Tala (spiny hackberry)
Celtis ehrenbergiana

The ripe orange fruit (February to May) marks the moment of greatest bird activity in the tala clumps.

Rosy-billed Pochard
At its best
Rosy-billed Pochard
Netta peposaca

Year round, with greater presence in autumn and winter.

Black-necked Swan
At its best
Black-necked Swan
Cygnus melancoryphus

Year-round in the open lagoons, with greater abundance in autumn and winter.

Spotted Sorubim
At its best
Spotted Sorubim
Pseudoplatystoma corruscans

Best in winter and autumn when the water levels drop.

Present

Species with notable presence this month.

Sarandí colorado
Present
Sarandí colorado
Cephalanthus glabratus

In autumn and winter, its brown spherical fruit remains an unmistakable visual marker of the wetland shore.

Tatané
Present
Tatané
Chloroleucon tenuiflorum

The spiralled pods fallen on the trail floor are easy to find in autumn and winter and are one of the most striking botanical finds to photograph in the Iberá.

Also in April

More species present, in bloom or breeding this month.

🐍 Patagonian Racer 🐍 Brazilian Green Racer 🐦 Fork-tailed Flycatcher

Always there

The Iberá's emblematic wildlife is around all year, April included.

🐆 Ocelot 🦦 Coypu 🐻 Southern Tamandua 🐱 Puma 🦦 Neotropical Otter 🐊 Yacare caiman 🦫 Capybara 🦢 Southern Screamer 🦩 Jabiru 💜 Water hyacinth 🦩 Wood Stork 🐦 Anhinga 🐦 Yellow Cardinal 🐦 Saffron-cowled Blackbird

Where to see it

The gateways into the Great Iberá Park and the base towns, each with their own lodges, guides and boat tours.

Portal Río Corriente Portal Capivari Portal Uguay Portal Carambola Portal Laguna Iberá Portal San Nicolás Portal San Antonio Portal Cambyretá Portal Galarza P.N. Mburucuyá Ituzaingó Mercedes

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