Family Reed-warblers (Acrocephalidae)

Least Concern

Mountain Yellow Warbler (Iduna similis)


French: Hypolaïs de montagne German: Bergspötter Spanish: Zarcero montano

Chloropeta similis


, 1897,

Mount Kilimanjaro, 10,000 feet [c. 3050 m], Tanzania


Usually regarded as forming a species pair with I. natalensis. Monotypic.


S South Sudan (Imatongs, Dongatona Mts, Didinga Hills), NE & SW Uganda (Mt Morongole, SW highlands), highlands of E DRCongo, W Rwanda and W Burundi (Rwenzoris S to Itombwe and Mt Kabobo), Kenya (Mt Kulal, Mt Elgon, W & C highlands), N & E Tanzania (Crater Highlands E to Mt Kilimanjaro, and Ngurus and Ukagurus S to Njombe), and Nyika Plateau on Zambia–Malawi border.

Descriptive notes

13 cm; 9–15 g. A medium-sized olive-and-yellow warbler with broad bill. Plumage is olive-green above, top of head uniform with mantle; short narrow yellow supercilium... read more


Song a short, varied medley, with sweet whistles, warbled notes and trills, lasting 4–7... read more


Rank growth and bushes along streams or in swampy valleys; edges or clearings in montane forest;... read more

Food and feeding

Insects, especially flies (Diptera). Often forages low down, but also in middle level thickets and in treetops to 20 m among canopy and... read more


Breeds mainly in rainy season; eggs laid Apr and Oct in S Sudan, Apr–Jun and Oct in DRCongo, Jul–Aug and Nov in W Kenya, Sept... read more



Status and conservation

Not globally threatened. Locally common within fragmented range in highlands of E Africa. Reasonably adaptable, and capable of thriving in secondary habitats. Not dependent... read more

Recommended citation

Pearson, D. (2019). Mountain Yellow Warbler (Iduna similis). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from on 23 February 2019).