Iduna

• Thick-billed Warbler Iduna aedon

  The Thick-billed Warbler is a small brown bird with rufous on its crown and tail. It stays concealed in dense grass and shrubs and moves between breeding and wintering areas.

• Booted Warbler Iduna caligata

  The Booted Warbler breeds from central Russia to western China and moves to the Indian subcontinent and Sri Lanka for winter. It often uses low bushes and scrub.

• Dark-capped Yellow Warbler Iduna natalensis

  The Dark-capped Yellow Warbler occurs in the Afrotropical region and uses scrub and open habitats near freshwater. It is listed at about 13 cm and 10–11 g, and gleans small invertebrates among foliage by day.

• Western Olivaceous Warbler Iduna opaca

  The Western Olivaceous Warbler is migratory. It breeds in North Africa and southern Iberia and winters in western sub-Saharan Africa. It also uses dry scrub, orchards, and thickets along rivers.

• Eastern Olivaceous Warbler Iduna pallida

  A small, pale olive-gray warbler that searches shrubs and trees for insects. It migrates between breeding and wintering areas.

• Sykes's Warbler Iduna rama

  This small warbler breeds in Central Asia and winters mainly on the Indian peninsula. It prefers dry, open habitats with a sparse tree canopy.

• Mountain Yellow Warbler Iduna similis

  This leaf-warbler occurs in the East African highlands. It has olive upperparts, yellow underparts, a long tail, and a slender bill. It moves through low vegetation in montane forest and high-altitude scrub.

• Booted Warbler Iduna caligata

  The Booted Warbler breeds from central Russia to western China and moves to the Indian subcontinent and Sri Lanka for winter. It often uses low bushes and scrub.

• Eastern Olivaceous Warbler Iduna pallida

  A small, pale olive-gray warbler that searches shrubs and trees for insects. It migrates between breeding and wintering areas.

• Sykes's Warbler Iduna rama

  This small warbler breeds in Central Asia and winters mainly on the Indian peninsula. It prefers dry, open habitats with a sparse tree canopy.

• Western Olivaceous Warbler Iduna opaca

  The Western Olivaceous Warbler is migratory. It breeds in North Africa and southern Iberia and winters in western sub-Saharan Africa. It also uses dry scrub, orchards, and thickets along rivers.

• Dark-capped Yellow Warbler Iduna natalensis

  The Dark-capped Yellow Warbler occurs in the Afrotropical region and uses scrub and open habitats near freshwater. It is listed at about 13 cm and 10–11 g, and gleans small invertebrates among foliage by day.

• Mountain Yellow Warbler Iduna similis

  This leaf-warbler occurs in the East African highlands. It has olive upperparts, yellow underparts, a long tail, and a slender bill. It moves through low vegetation in montane forest and high-altitude scrub.

• Thick-billed Warbler Iduna aedon

  The Thick-billed Warbler is a small brown bird with rufous on its crown and tail. It stays concealed in dense grass and shrubs and moves between breeding and wintering areas.