The Sardinian warbler (Sylvia melanocephala) is a common and widespread typical warbler from the Mediterranean region. Like most Sylvia species, it has distinct male and female plumages. The adult male has a grey back, whitish underparts, black head, white throat and red eyes. Plumages are somewhat variable even in the same locality, with the intensity of a reddish hue on upper- and/or underside varies from absent to (in some subspecies) pronounced. The female is mainly brown above and buff below, with a grey head. The Sardinian warbler’s song is fast and rattling, and is very characteristic of the Mediterranean areas where this bird breeds.
The geographical variation in the Sardinian warbler conforms to some extent with Gloger’s rule, though not as strongly as in some other typical warblers. The validity of leucogastra and norissae is not accepted by some authors, and valverdei has been described very recently. On the other hand, leucogastra might be more than one subspecies.
Sylvia melanocephala melanocephala (Gmelin, 1789)
Iberia across the northern Mediterranean to western Turkey. Extends into the Maghreb from Iberia, and into Libya from Italy via Sicily. Migrates to the Sahel and oases in the Sahara in winter.
Large, long wings, tail tip rather pointed. A dark form, usually lacking any reddish in males but flanks extensively grey. Females’ uppersides vary between deep olive brown and greyish olive.
Sylvia melanocephala leucogastra (Ledru, 1810) – often included in melanocephala; phylogenetic status requires review
Canary Islands, resident, probably some vagrancy between eastern islands and Maghreb.
Medium size, short-winged and large-billed. Tenerife and La Palma (western) birds are most distinct, being dark above with some rusty/beige hue on the underside in males. Eastern birds (Fuerteventura, Lanzarote and Gran Canaria) are more like melanocephala and momus but differ in measurements.