Contents xiii 



CHAPTER X 



MIMICRY AND PROTECTIVE RESEMBLANCE IN 

 COLOUR OF BIRDS 



Mimicry in insects — Curassow and Caracaia — Drongo and Black 

 Cuckoo — Orioles and Helmeted Honey-eaters — Owl-Parrot — 

 Thick-knees — Pennant-winged Nightjar — Argentine Little 

 Bittern — Ptarmigan and Willow-CJrouse .... 261 



CHAPTER XI 



PARASITIC BIRDS 



The Koel and the Myna — The Common Cuckoo — Its INIigration 

 and winter home — The similarity of its eggs to those of the 

 foster-parent — The ejection of the young of the latter — The 

 Cow-birds parasitic on each other — The nesting of the Ani 

 or Savana Cuckoo of Jamaica ...... 295 



CHAPTER XII 



THE MIGR.VTION OF BIRDS 



Scanty knowledge of the subject — Summary of obser\ations by 

 Mr. W. Eagle Clarke — Giitke's obser\-ations in Heligoland 

 — Migration in the Mississippi Valley — Migration in the 

 North Sea — Mr. Abel Chapman's remarks on the flight of 

 birds ........... 323 



CHAPTER XIII 



GEOGRAPHICAL DISTRIBUTION 



The Collecting of Specimens — The six Zoo-geographical Regions 

 of the World — Regions and Sub-Regions — Provinces and 

 Sub-Provinces — Sclater's Scheme — Wallace's Amendments — 

 Allen's Scheme — Dr. H. O. Forbes and the Lost Continent . 348 



