viu CONTENTS 



CHAPTER XII 



special instincts of birds — ^The play of yonng birds and of adults 

 — Bower-builders and their peculiarities — Ornamentation of 

 nests — The instinct for food-storage in some forms — The 

 practice of piracy — ^Toilet and bed-time habits pp. 303-318 



CHAPTER XIII 



Special physiological peculiarities of birds— ^Longevity — ^Tempera- 

 ture of body — Change of colour in bare skin of some^ such as 

 Turkey — The phenomena of the moult — Gradual change in 

 colour of bill and feet according to age and sex or season 

 — Changes in iris colour — Beak-sheath shedding as in Puffin 



pp. 319-328 



CHAPTER XIV 



Abnormalities — ^Hybrids, their characteristics and power of repro- 

 duction or otherwise — Abnormal plumages, such as albinism 

 or melanism, temporary or permanent — Overgrowth of claws 

 and bill pp. 329-342 



CHAPTER XV 



Relations of birds with men — ^Persecuted species — ^Parasitic or 

 commensal species — Domestic forms — Introduced forms and 

 the results of introduction .... pp. 343-356 



INDEX pp. 357-363 



