White-faced IbisFamily Threskiornithidae
White-faced Ibis
Plegadis chihi
In Spanish: Ibis Cariblanco
- M?
A rare, uncertain migrant that is easy to mistake for the Glossy Ibis.
The White-faced Ibis (Ibis Cariblanco) is a bird to know about rather than to expect. The official Costa Rican bird list gives it the status M?, an uncertain migrant, and does not treat it as a regular resident.
Avibase's Costa Rica checklist labels it rare or accidental, so a beginning birder should not expect to see one. Dark ibises in the far north are much more likely to be Glossy Ibis.
That is exactly why it is worth learning. Knowing how the two differ sharpens your eye for every wader you watch, and this page is as much about telling them apart as about finding this bird.
How to find it
Set your expectations low and your curiosity high. Check the edges of wetlands and wet farm fields, where a feeding flock often turns up. A spotting scope helps with fine detail, such as the metallic colours of breeding adults. Look closely at every dark ibis, since eye colour and facial pattern separate this species from the far more likely Glossy Ibis. Dark ibises on a Caño Negro boat trip, for example, are much more likely to be Glossy.
How to recognise it
This is a long-legged wader with a long, downcurved bill. Its plumage shimmers purple, green and bronze.
Breeding adults show:
A red eye ringed by a white mask.
Pink bare facial skin edged with white feathers.
A grey bill.
Brighter red legs.
Adults have red eyes all year, while Glossy Ibises have dark eyes. Glossy also has bluish facial skin with no white border.
Juveniles of the two species are nearly identical, so a young dark ibis is a hard call even for experienced birders.
What it sounds like
Behaviour and diet
This ibis is sociable. It travels in flocks and mixes with other wading birds. Flocks of a few hundred have been recorded, though most are much smaller.
It feeds by touch, probing moist soil with its curved bill for earthworms and other invertebrates. It works marsh edges and wet farm fields. It also sometimes adds human-made objects to its nests, such as cigarette lighters, shotgun shells and hair combs.
Where it lives
Across its range it lives mainly in freshwater wetlands, especially cattail and bulrush marshes. It also feeds in flooded hayfields, farm fields and estuarine wetlands.
These are range-wide habits rather than Costa Rican ones. It breeds in the western United States and central Mexico, and the Costa Rican birds are visitors from that population.
When to see it
It breeds in the western United States and central Mexico and spends the winter in Central America and South America.
Similar birds
Costa Rica also has the Glossy Ibis, which the official list marks as a resident. In non-breeding plumage the two are very similar, and the White-faced is slightly smaller and warmer in colour. A tour trip list for the far north recorded a single Glossy Ibis flying over a Caño Negro boat trip.
Names and lore in Costa Rica
The official Spanish name is Ibis Cariblanco, and a Chilean bird page lists the same name as the one used in Costa Rica. Other general Spanish names for the species are cuervillo de cañada, cuervo de pantano and ibis oscuro, though these are not specifically Costa Rican nicknames. The look-alike Glossy Ibis is called coco negro or ibis morito here.
Status and conservation
The official Costa Rican bird list gives it the status M?, an uncertain migrant, and Avibase's Costa Rica checklist labels it rare or accidental.
Photography tips
A spotting scope helps with fine detail, such as the metallic colours of breeding adults. Checking the edges of wetlands and fields often turns up a feeding flock.
How we know this 12 sources, each read on the date shown
- Lista Oficial de las Aves de Costa Rica (AOCR) read 2026-11-04
https://listaoficialavesdecostarica.wordpress.com/lista-oficial/lista-oficial-online/ - Avibase Costa Rica checklist read 2026-11-04
https://avibase.bsc-eoc.org/checklist.jsp?region=CR - Wikipedia read 2026-11-04
https://en.wikipedia.org/wiki/White-faced_ibis - Cornell Lab, All About Birds read 2026-11-04
https://www.allaboutbirds.org/guide/White-faced_Ibis/overview - Birds of the World (Cornell) read 2026-11-04
https://birdsoftheworld.org/bow/species/whfibi/cur/introduction?lang=es - Club de Aves, Universidad Autónoma de San Luis Potosí read 2026-11-04
http://evirtual.uaslp.mx/Agronomia/clubdeaves/Ciconiformes/Paginas/Plegadischihi.aspx - NatureServe Explorer read 2026-11-04
https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.103784/Plegadis_chihi - Damisela read 2026-11-04
https://www.damisela.com/zoo/ave/otros/ciconi/ibis/chihi/index.htm - Costa Rican natural history species page (Flickr) read 2026-11-04
https://www.flickr.com/photos/jobando/28356927189 - Field Guides trip list, Costa Rica 2017 read 2026-11-04
https://fieldguides.com/triplists/cr217.html - xeno-canto species page read 2026-11-04
https://xeno-canto.org/species/plegadis-chihi - Las Aves que Viven en Chile read 2026-11-05
http://avesvivenchile.blogspot.com/2007/11/cuervo-de-pantano.html