BIRD LIFE OF BARTICA 



105 



tage where it could see clearly about it, or flying on out of 

 sight was plain evidence of lack of protective coloring, at 

 least in its own instinctive estimation. If it squatted or 

 "froze" either for a moment or until we had crept up to with- 

 in a few feet, I felt that it unconsciously, but surely, count- 

 ed upon being overlooked, or confused with its surroundings. 

 This to my mind, is the only infallible test which we may 

 apply with confidence to the consideration of this much dis- 

 cussed phenomenon. Again I offer a division of the same 

 bird groups based on this distinction : 



UNPROTECTED 



Terns 

 Jacanas 

 White herons 

 Vultures 

 Caracaras 



Kites 



Macaws 



Kingfishers 



Swifts 



Hummingbirds 



Anis 



Toucans 



Swallow puffbirds 



Woodpeckers 



Flycatchers 



Swallows 



Wrens 



Caciques 



Blackbirds 



Orioles 



Jays 



MALES 

 UNPROTECTED 



Bellbirds 



Cotingas 



Finches 



Honey-creepers 



Tanagers 



PROTECTED 



Tinamou 



Curassows 



Guans 



Chachalacas 



Partridges 



Jungle Pigeons 



Doves 



Rails 



Waders 



Sun-bitterns 



Colored herons 



Owls 



Parrots 



Parrakeets 



Motmots 



Goatsuckers 



Cuckoos 



Trogons 



Barbets 



Jacamars 



Puffbirds 



Antbirds 



Woodhewers 



Manakins 



Goldbirds 



Thrushes 



Vireos 



