50 



Br. Latham, in his Synopsis, makes these only va- 

 riety of the former. Linnaeus thought them male and 

 female, and Buftbn thought they differed only from 

 age ; but by comparing them, the beak will be found 

 to differ exceedingly in shape, so much so, as to leave 

 no doubt with me of their being distinct species. 



CROWS (CORVUS). 



This Case contains a great variety of the birds of 

 this genus, some of which arc highly beautiful in their 

 plumage, while others surprise by their singularity. 

 The various kinds are found by navigators inhabiting 

 every part of the know'n world. They are in general 

 clamorous and mischievous birds, easily tamed, and 

 several imitate the human voice distinctly. They are 

 promiscuous feeders ; carrion is a favourite food, but 

 they do not object to cater for themselves by killing 

 rabbits, young ducks, chicken, or any small animals 

 they have stren^tli to overpower. Ten species are 

 found in Great Britain. 



ROLLER (CORACIAS), 



These are, in their manner and general habits, 

 much allied to the last : many of them are of the 

 most vivid plumage, of which the Senegal Roller will 

 serve as an example. 



