The Food of 

 Some British Wild Birds 



A Study in Economic Ornithology. 



BY 

 WALTER E. COLLINGE, M.Sc., F.L.S., F.E.S., 



Foreign Member of the American Association of Economic 



Entomologists ; Honorary Fellow of the Royal Horticultural 



Society ; Joint Honorary Secretary of the Association of 



Economic Biologists ; Editor of the " Journal of 



Economic Biology ;" and late Special Lecturer 



on Economic Zoology in the University 



of Birmingham. 



Economic Ornithology has progressed to the point 

 where intensive studies are demanded." 



H. C, BRYANT. 



LONDON : 

 DULAU & Co., LIMITED. 



