Contents 



Pase 



Contents iii 



Acknowledgments iv 



Biological considerations 3 



Evolution and relationships 3 



Phylogeny of brood parasitism 14 



Brood hosts 19 



Mandibular hooks of nestlings 20 



The guiding habit 25 



History of our knowledge of the habit 25 



Earlier explanations 27 



Typical guiding behavior 32 



Mammalian symbionts 41 



Diminishing frequency of the habit 50 



Behavioristic level of the habit 54 



Antiquity of the habit 64 



Evolution of the habit 66 



Cerophagy 71 



Wax eating in other birds 79 



Origin of cerophagy 81 



The species of honey-guides 83 



Genus Indicator Stephens 83 



Spotted honey-guide (/. maculatus G. R. Gray) 84 



Variegated, or scaly-throated, honey-guide (/. variegatus Lesson) . 89 



Greater honey-guide (/. indicator Sparrman) 115 



Malayan honey-guide (7. archipelagicus Temminck) 174 



Lesser honey-guide (/. minor Stephens) 178 



Least honey-guide (7. exilis Cassin) 222 



Orange-rumped honey-guide (7. xanthonotus Blj'th) 231 



Genus Melichneutes Reichenow 236 



Lyre-tailed honey-guide {M. robustus Bates) 237 



Genus Alelignomon Reichenow 245 



Zenker's honey-guide (M. zenkeri Reichenow) 246 



Genus Prodotiscus Sundevall 247 



Slender-billed honey-guide (P. insignis Cassin) 248 



Sharp-billed honey-guide (P. regulus Sundevall) 256 



References 265 



Index 279 



m 



