Yellow-browed Warbler

Phylloscopus inornatus

Order: Passeriformes
Family: Phylloscopidae
Presence in the Strait: Vagrant
IUCN (global): LC · Least concern
In Spanish: Mosquitero bilistado

39% of its open observations in the area are from November.

Length: 10 cm
Weight: 7 g

Presence in the Strait

Accidental. Three records: At Gibraltar, one bird seen on 30.10.84 with one ringed on 26.10.96, and another bird ringed at Guadacorte estate (Los Barrios) on 27.01.93.

Identification

Like a small Chiffchaff, with whiter underparts, pale yellow supercilium, dark eye-stripe and two whitish wing-bars. They breed in the Siberian taiga.

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

39 %

Peak in November. 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 3.6 km. Opacity follows the square root of the count, and also reflects where people observe most.

See on the map

First open record: 13 November 1988
Latest record: 7 December 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: Not included
Spanish Catalogue: Not included
Red Book of the Birds of Spain 2021: NE · Not evaluated · breeding
Global Red List (IUCN): LC · Least concern

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.

Same genus in the Strait

Common Chiffchaff11–11 cm · Seasonal
Western Bonelli´s Warbler11–11 cm · Seasonal
Willow Warbler11.5–11.5 cm · Migrant
Wood Warbler12.5–12.5 cm · Migrant
Pallas´s Leaf Warbler9.5–9.5 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: Phylloscopidae
GBIF taxon key: 2493095

Sources

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

Yellow-browed Warbler

Presence in the Strait

Identification

Gallery