Blyth’s Reed Warbler

Acrocephalus dumetorumBlyth, 1849

Order: Passeriformes
Family: Acrocephalidae
Presence in the Strait: Vagrant
In Spanish: Carricero de Blyth

Photograph: Andrey Gulivanov, CC BY, vía iNaturalist

Length: 13 cm
Weight: 12 g

Presence in the Strait

Accidental. One bird ringed at Gibraltar on 24.09.73.

Identification

Hardly distinguishable from a Reed Warbler, the wing-formula being determinate: 2nd primary same length as 5th, 6th or 7th, but in the case of a Reed Warbler, the 2nd equals 3rd or 4th. They breed in N Europe and Asia.

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

No observations with a compatible licence in the area, or taxon without a match in GBIF.

Same genus in the Strait

Eurasian Reed Warbler12.5–12.5 cm · Seasonal · overlapping size
Sedge Warbler13–13 cm · Migrant
Moustached Warbler13–13 cm · Seasonal
Great Reed Warbler19–19 cm · Seasonal
Aquatic Warbler13–13 cm · Vagrant

Species of the same genus that also occur here, ordered by how close they are in size. Being relatives does not mean they are confused in the field, but that is where the doubts start: compare size and season.

Classification

Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Passeriformes
Family: Acrocephalidae
GBIF taxon key: 2493145

Sources

Distribution and calendar: GBIF, live query
Photograph: Andrey Gulivanov, CC BY, vía iNaturalist
Taxonomy: GBIF backbone, pending WoRMS for marine taxa
Editorial text: written by Bioestrecho
Last revised: 8 September 2026

Blyth’s Reed Warbler

Presence in the Strait

Identification

Gallery