194 



U.S. NATIONAL MUSEUM BULLETIN 22 3 



Predisposition to parasitism, in birds, 

 35, 36 

 in invertebrates, 35 

 principalis. Vidua, 112 

 Prinia, 44, 45, 51, 130 



flavicans, 50, 51, 129, 130 

 subflava, 43, 49, 105 

 subflava affinis, 49, 105 

 progne, Diatropura, 95, 112 



Emberiza, 95, 112 

 Promeropinae, 4 



Prosteganura haagneri okadai, 57 

 Psalidoprocne, 139 

 psittacea, Erythrura, 29, 30 (fig.) 



Fringilla, 29 

 Purple widow bird, 57 

 purpurascens, Hypochera, 60 



Vidua funerea, 61, 77 

 Pyrhula nana, 4 

 Pyrrhula albifions, 112 



striolata. 111 

 Pytilia, 28, 31, 72, 73, 142, 148, 152, 154 

 afra, 28, 148, 150, 153 

 hypogrammica, 153 

 melba, 20, 26, 27 (fig.), 28, 132, 



147, 150, 152, 153 

 monteiri, 18 



phoenicoptera, 26, 153, 154 

 phoenicoptera emini, 153 

 Pytilia, red-winged, 153, 154 



yellow-backed, 150, 152, 153 

 yellow- winged, 153 

 Pytilia sp., 73 

 Quail finch, 50, 132 

 Quelea, 12 



cardinalis, 19, 50, 149 

 erythrops, 18, 20 



quelea, 3, 16, 18, 19, 20, 21, 154, 159 

 quelea, Emberiza, 154 



Quelea, 3, 16, 18, 19, 20, 21, 154, 

 159 

 rara, Estrilda, 107 



Habropyga, 107 

 Rattler grass warbler, 48 

 Rectrices, elongation of, 9, 10 

 Red-bellied fire finch, 78, 84, 85, 86, 107 

 Red-billed combassou, 57, 68 

 fire finch, 72 



weaver, 3, 16, 17, 20, 154, 159 

 Red bishop bird, 72, 149 

 Red-collared whydah, 106 

 Red-throated whydah, 95 

 Red-winged pytilia, 153, 154 



Reflection tubercles, 6, 22, 28-29, 30 

 regia, Emberiza, 127 



Vidua, 7, 10, 11, 12 (fig.), 27, 89, 

 112, 127-136 

 Regurgitative feeding of nestlings, in 

 Estrildinae, 8 

 in Ploceinae, 8 

 reichenowi, Ploceus, 14, 18, 21 



Sycobrotus, 18 

 rendalli, Estrilda, senegala, 107 



Lagonosticta senegala, 78 

 rhodopyga, Estrilda, 110 

 Ribbon finch, 113, 116 

 Rock thrush, 23 



ruberrima, Estrilda senegala, 107 

 Lagonosticta, 107 

 Lagonosticta brunneiceps, 107 

 rubiginosus, Ploceus, 19, 21 

 rubricata, Estrilda, 106 

 Fringilla, 78, 106 

 Lagonosticta, 78 

 ruficapilla, Cisticola fulvicapilla, 105 

 rufoaxillaris, Molothrus, 30, 33, 34 

 rufocinctus. Passer, 50, 113 

 Rufous grass warbler, 48, 51 



sparrow, 113 

 Scaly weaver, 112, 131 

 Scratching movements, of Ploceinae, 7 



of Viduinae, 7 

 Screaming cowbird, 30, 46 

 scutatus, Mahmbus, 18, 19 

 Spermestes, 106 

 Spermestes cucullatus, 20, 106 

 Sycobius, 18 

 Seedeater, streaky, 111 

 senegala, Estrilda, 28, 78, 83, 84, 107 

 Fringilla, 78, 84, 107 

 Lagonosticta, 27 (fig.), 72 

 Serena, Vidua, 83 

 Serin us, 40 



Sex ratio in Quelea quelea, 16 

 Shafttail, Australian, 66 

 Shaft-tailed widow bird, 11, 58, 89, 127- 



136 

 sharii, Hypochera chalybeata, 60, 61 

 Short-tailed widow birds, 55-68 

 Singing grass warbler, 48 

 Sitagra cucuUata, 15 

 jacksoni, 15 

 pelzelni, 14 

 epekei, 15 

 vitellina, 15 



