Marbled Duck

Marmaronetta angustirostris

Order: Anseriformes
Family: Anatidae
Presence in the Strait: Occasional
Protection in Spain: In danger of extinction · Andalusian Catalogue
In Spanish: Cerceta pardilla

Photograph: Diego González Dopico, CC BY, vía iNaturalist

Length: 39–42 cm
Wingspan: 63–67 cm
Weight: 530 g

Presence in the Strait

Occasional. Seven records (14 birds): four winter visitors (December-January) at the Marismas del Palmones and La Janda; one spring visitor (April) also at La Janda, and two postnuptial migrants (August-September) at the River Guadiaro estuary.

Identification

Small duck, pale sandy-brown with dark eye-patch and long wings. Cerceta Carretona Cuchara Común Anatidae Cerceta Carretona Cuchara Común Cerceta Pardilla

Bioestrecho editorial text. Last revised: 8 September 2026.

Photographs from iNaturalist observations with the licence checked file by file. Those marked “Strait” were taken within the area; place and date are those of each observation.

Calendar in the Strait

31 %

Peak in January. Observations under CC0 or CC BY licences. The distribution also reflects observation effort.

Where it is seen

Open records from the atlas database, in cells of about 9.0 km. Opacity follows the square root of the count, and also reflects where people observe most.

See on the map

Sensitive species (very scarce breeder, sensitive to disturbance): its observations are shown with the location generalised to about 11 km, here and in the explorer. The original source keeps the exact position.

First open record: 19 August 1998
Latest record: 26 March 2024

The oldest and the most recent open observation in the extended area. A recent first observation does not mean the species is new: it means nobody had published it openly before.

Conservation

The catalogues, Andalusian and Spanish, are what binds; the Red Book assesses the Spanish population with IUCN criteria, and the global Red List is the context.

LCNTVUENCR

Andalusian Catalogue: In danger of extinction
Spanish Catalogue: In danger of extinction
Red Book of the Birds of Spain 2021: CR · Critically endangered · breeding — DD · Data deficient · wintering or migrating
Global Red List (IUCN): NT · Near threatened

Plan: AVES DE HUMEDALES · Annex I of the Birds Directive

Andalusian Catalogue: Junta de Andalucía, list of 24 April 2025. Spanish Catalogue: MITECO, table of 30 June 2025. Red Book: SEO/BirdLife, 2021 (Annex I). IUCN: via GBIF, 6 September 2026. Red Book and IUCN categories are assessments; catalogue categories are legal obligations.

Classification

Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Anseriformes
Family: Anatidae
GBIF taxon key: 2498390

Sources

Distribution and calendar: Bioestrecho's own database, ingested from GBIF and OBIS
Photograph: Diego González Dopico, CC BY, vía iNaturalist
Taxonomy: GBIF backbone, pending WoRMS for marine taxa
Editorial text: written by Bioestrecho
Last revised: 8 September 2026

Marbled Duck

Presence in the Strait

Identification

Gallery