JACKDAW. 



113 



The female is smaller in size than the male ; the grey 

 colour of the feathers under the hood is less conspicuous, 

 being rather darker than that of the males, and is not 

 spread over so large a surface. 



Young birds of the year exhibit but little grey colour 

 about the neck, and it is not much more obvious in the 

 second year ; several years are probably required for the 

 attainment of the bright silvery grey colour observable on 

 some males. 



The vignette below represents the breast-bone of the 

 Jackdaw, as illustrative of the form of the sternum in the 

 genus Corvus. 



VOL. II. 



