| Orchard Oriole Icterus spurius | Passeriformes / Icteridae | NE |
| Black-vented Oriole Icterus wagleri | Passeriformes / Icteridae | LC |
| Grey-headed Fish Eagle Icthyophaga ichthyaetus | Accipitriformes / Accipitridae | NT |
| Sanford's Sea Eagle Icthyophaga sanfordi | Accipitriformes / Accipitridae | VU |
| African Fish Eagle Icthyophaga vocifer | Accipitriformes / Accipitridae | LC |
| Madagascar Fish Eagle Icthyophaga vociferoides | Accipitriformes / Accipitridae | CR |
| Mississippi Kite Ictinia mississippiensis | Accipitriformes / Accipitridae | LC |
| Plumbeous Kite Ictinia plumbea | Accipitriformes / Accipitridae | LC |
| Boulder Finch Idiopsar brachyurus | Passeriformes / Thraupidae | LC |
| Red-backed Sierra Finch Idiopsar dorsalis | Passeriformes / Thraupidae | LC |
| White-throated Sierra Finch Idiopsar erythronotus | Passeriformes / Thraupidae | LC |
| Glacier Finch Idiopsar speculifer | Passeriformes / Thraupidae | LC |
| African Yellow Warbler Iduna natalensis | Passeriformes / Acrocephalidae | LC |
| Western Olivaceous Warbler Iduna opaca | Passeriformes / Acrocephalidae | LC |
| Mountain Yellow Warbler Iduna similis | Passeriformes / Acrocephalidae | LC |
| Blue-capped Ifrit Ifrita kowaldi | Passeriformes / Ifritidae | LC |
| Pin-tailed Manakin Ilicura militaris | Passeriformes / Pipridae | LC |
| Scaly-breasted Illadopsis Illadopsis albipectus | Passeriformes / Pellorneidae | LC |
| Blackcap Illadopsis Illadopsis cleaveri | Passeriformes / Pellorneidae | LC |
| Tanzanian Illadopsis Illadopsis distans | Passeriformes / Pellorneidae | LC |
| Brown Illadopsis Illadopsis fulvescens | Passeriformes / Pellorneidae | LC |
| Puvel's Illadopsis Illadopsis puveli | Passeriformes / Pellorneidae | LC |
| Mountain Illadopsis Illadopsis pyrrhoptera | Passeriformes / Pellorneidae | LC |
| Rufous-winged Illadopsis Illadopsis rufescens | Passeriformes / Pellorneidae | NT |
| Pale-breasted Illadopsis Illadopsis rufipennis | Passeriformes / Pellorneidae | LC |
| Spotted Thrush-Babbler Illadopsis turdina | Passeriformes / Pellorneidae | LC |
| Socotra Warbler Incana incana | Passeriformes / Cisticolidae | LC |
| Buff-bridled Inca Finch Incaspiza laeta | Passeriformes / Thraupidae | LC |
| Grey-winged Inca Finch Incaspiza ortizi | Passeriformes / Thraupidae | LC |
| Rufous-backed Inca Finch Incaspiza personata | Passeriformes / Thraupidae | LC |
| Great Inca Finch Incaspiza pulchra | Passeriformes / Thraupidae | LC |
| Little Inca Finch Incaspiza watkinsi | Passeriformes / Thraupidae | VU |
| Malaysian Honeyguide Indicator archipelagicus | Piciformes / Indicatoridae | NT |
| Least Honeyguide Indicator exilis | Piciformes / Indicatoridae | LC |
| Greater Honeyguide Indicator indicator | Piciformes / Indicatoridae | LC |
| Spotted Honeyguide Indicator maculatus | Piciformes / Indicatoridae | LC |
| Pallid Honeyguide Indicator meliphilus | Piciformes / Indicatoridae | LC |
| Lesser Honeyguide Indicator minor | Piciformes / Indicatoridae | LC |
| Dwarf Honeyguide Indicator pumilio | Piciformes / Indicatoridae | LC |
| Scaly-throated Honeyguide Indicator variegatus | Piciformes / Indicatoridae | LC |
| Willcocks's Honeyguide Indicator willcocksi | Piciformes / Indicatoridae | LC |
| Pale-tipped Inezia Inezia caudata | Passeriformes / Tyrannidae | LC |
| Plain Inezia Inezia inornata | Passeriformes / Tyrannidae | LC |
| Amazonian Inezia Inezia subflava | Passeriformes / Tyrannidae | LC |
| Slender-billed Inezia Inezia tenuirostris | Passeriformes / Tyrannidae | LC |
| Dusky Purpletuft Iodopleura fusca | Passeriformes / Tityridae | LC |
| White-browed Purpletuft Iodopleura isabellae | Passeriformes / Tityridae | LC |
| Buff-throated Purpletuft Iodopleura pipra | Passeriformes / Tityridae | EN |
| Cachar Bulbul Iole cacharensis | Passeriformes / Pycnonotidae | NE |
| Charlotte's Bulbul Iole charlottae | Passeriformes / Pycnonotidae | NE |