CYPSELIDAE 



425 



Africa, Abj^ssinia, and Uganda, and exceptionally on the Congo ; 

 C. horus across Tropical Africa ; C. andicola in Argentina, Peru, 

 and Bolivia ; C. montivagus in the last two countries. C. paci- 

 ficus of East Asia, with Japan and the Burmese countries, reaches 

 Australia in winter. Some species lay four or five eggs, and 



Fig. 88. — Swift. Cypselus apus. x ^. CErom Katural History of Selborne.) 



C. melaTwleucus of western North America utters a peculiar twitter 

 in its nest, placed in clefts of rocks.^ Five species of Tachornis, or 

 Palm-Swift, here included under Cypselus, are found throughout 

 the Ethiopian Eegion, from India and the Malay countries to 

 China, and in the West Indies ; T. (Claudia) squamata occupying 

 G-iiiana, Brazil, and East Peru. The toes point forward in two 

 pairs, the tail is forked. These birds usually attach their nests 



' Two large ticks (Ana2Jera fimhriata) are usually found on this bird, similar to 

 Anapera pallida of C. apus. 



