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MY LIFE AS A NATURALIST 



A. Why is the Crow, like the Raven (Corvus cor ax), a solitary 

 species, as compared with the social Rook ? 



B. Why does the Crow hop, and the Rook walk ? 



FIG. 38. FEMALE ROOK ARRIVING AT NEST. 



FIG. 39. MALE ROOK LEAVING NEST. 



C. Why do some Rooks repair their nests year by year, leaving 

 the old ones intact during Winter, whilst other colonies destroy 

 the whole of their habitations before quitting them for the Winter, 

 building entirely new nests the succeeding Spring ? 



