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tr.S. NATIONAL MUSEUM BULLETIN 265 



and 17 have been found to be hosts on five or more occasions. These 

 last are to be looked upon as the regular hosts of the didric cuckoo, 

 and they may be listed here in order of the frequency vsdth which 

 they have been so recorded: Ploceus velatus, 105 times; Euplectes orix, 

 77; Passer melanurus, 43; Ploceus cucullatus, 23; Ploceus capensis, 21; 

 Prinia subflava, 16; Ploceus nigerrimus, 8; Motacilla capensis, 7; 

 Chalcomitra senegulensis, 7; Ploceus intermedius, 7; Malimbus ru- 

 briceps, 6; Euplectes hordeaceus, 6; Emberiza flaviventris, 6; Motacilla 

 aguimp, 5; Nectarinia erythroceria, 5; Ploceus pelzelni, 5; Ploceus 

 ocularis, 5. 



List of all known host species: 

 Colius colius 

 Motacilla aguimp 

 Motacilla capensis 

 Anthus novaeseelandiae 

 Turdoides jardinei 

 Parisoma suhcaeruleum 

 Bradornis jyallidus 

 Bradornis microrhynchus 

 Terpsiphone viridis 

 T'urdus olivaceus 

 Cercomela familiaris 

 Cossypha cafra 

 Dessonornis humeralis 

 Calamocichla leptorhyncha 

 Camaroptera brachyura 

 Cisticola erythrops 

 Cisticola robusta 

 Cisticola ruficeps 

 Prinia flavicans 

 Prinia subflava 

 Prinia maculosa 

 Lanius collaris 

 Oriolus larvatus 

 Nectarinia kilimensis 

 Nectarinia erythroceria 

 Cinnyris chloropygius 

 Chalcomitra amethystina 

 Chalcomitra olivacea 

 Chalcomitra senegalensis 

 Plocepasser mahali 

 Passer domesticus 

 Passer melanurus 

 Passer iagoensis 



White-backed mousebird 

 Pied wagtail 

 Cape wagtail 

 Richard pipit 

 Arrow-marked babbler 

 Tit-babbler 

 Pale flycatclier 

 Small-billed flycatcher 

 Paradise flycatcher 

 Olive thrush 

 Familiar chat 

 Cape robin-chat 

 White-throated robin-chat 

 Tana swamp warbler 

 Glass-eye 



Red-faced grass-warbler 

 Stout grass-warbler 

 Redpate grass-warbler 

 Black-chested longtail 

 Tawny-flanked longtail 

 Spotted longtail 

 Fiscal 



Black-headed oriole 

 Bronzy sunbird 

 Red-breasted sunbnd 

 Olive-bellied sunbird 

 Amethyst sunbird 

 Olive sunbird 

 Scarlet-chested sunbird 

 White-browed sparrow-weaver 

 House sparrow 

 Cape sparrow 

 Rufous sparrow 



