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Sickle-winged Nightjar (Eleothreptus anomalus)
🐦 Native species of the Iberá

Sickle-winged Nightjar

Eleothreptus anomalus

The rarest nightjar of the Iberá. It lives in the wet marshes with tall grassland. The male has almost entirely black wings with a white patch, unique in its family.

One of the most singular nightjars in South America and a rarity even for ornithologists. The male has black wings with a broad white patch on the primaries, a pattern completely different from that of any other nightjar. The body plumage is brown with the cryptic markings usual in the family. The female is more cryptic and brown-winged. It measures 18 to 20 cm. Endangered in Argentina due to the loss of its specific habitat: wet grasslands and marshes.

Behaviour

Nocturnal and elusive. It inhabits the wetlands with tall, damp grasslands, a very specific habitat that sets it apart from the other nightjars. It comes out to hunt at nightfall over the wetland. Its song is little known. The Iberá is one of the few places where it can be observed with relative regularity.

How and when to see it

At nightfall in the wetlands with tall grasslands. Portals Laguna Iberá, Uguay and Capivari are the best sites to find it.

Where to see it in the Iberá

The gateways of the Great Iberá Park where sickle-winged nightjar has confirmed presence:

Tours to see it

Verified providers operating at the gateways where sickle-winged nightjar lives. You contact them directly on WhatsApp from the app.

Species profile

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