Western Subalpine Warbler

Curruca iberiae

A small, slim warbler with a long tail. Breeding males are distinctive, with gray upperparts contrasting with a puffy rufous throat and breast, and a bold white moustache mark. Female and non-breeding males resemble a washed-out version of the breeding male, with much less rufous below. Typically found in scrubby, dense bushy habitats, but also in more open woodland and savanna. Sings from the tops of bushes, giving a rattling and loud sequence of notes. The call is a dry "tek" note, which is also incorporated into the song. Very similar to Moltoni’s Warbler, and best separated by call (single notes rather than dry rattles); breeding male is also richer rufous below. Also very similar to Eastern Subalpine Warbler, but call is subtly different: Western’s is slightly harsher, with only one syllable. Breeding males are separated visually from Eastern by having more rufous on the belly, a paler face, and a narrower white moustache.

Taxonomy

Scientific name
Curruca iberiae
Authority
(Svensson, 2013)
Order
Passeriformes
Family
Sylviidae
Genus
Curruca

Range and habitat

This species prefers tall and dense heterogeneous maquis with sparse tree cover in dry Mediterranean areas, particularly maquis of holm oak (Quercus ilex) and those dominated by strawberry tree (Arbutus) and tree-heath (Erica). It is also frequently found in young cork oak (Quercus suber) forest and in dense but treeless bushy areas. It uses bushy formations dominated by brambles (Rubus fruticosus) along sunny ravines and valley bottoms and prefers the intermediate stages of post-wildfire succession. Breeding occurs from late March to late June and the species is monogamous. The male constructs several ‘cock nests’ but both sexes build the breeding nest which is a deep, robust cup of grasses, thin roots and leaves and lined with finer grasses, rootlets and hair. It is placed in low scrub, bush or a small tree, c. 30–130 cm above the ground. Clutches are three to five eggs. The diet is mostly small insects and their larvae but outside of the breeding season berries and fruits are also taken. The species is a long-distance migrant, wintering in sub-Saharan Africa (Aymí et al. 2015).

Breeding range
PAL : Iberia, s France, and extreme nw Italy. Also nw Africa from Morocco to Tunisia
Non-breeding range
nw, w AF

Photos

Distribution

Bird Calls

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