CROW TRIBE. 



3 2 3 



inhabits, the grey struthidea (Struthidea cinerea) is confined to the rocky hill- 

 ridges of Southern and Eastern Australia. The eggs are four in number, and are 

 white in colour, blotched with reddish brown and grey; the nest is of mud, 

 thickly lined with fine grass. The struthidea feeds principally upon insects, 

 chiefly beetles. The two sexes are so nearly identical in size and colour that they 

 can only be distinguished by dissection. This species differs from many other 



GREY STRDTHIDEA (J liat. Size). 



Australian birds by reason of the sober colour of its dress, which is inconspicuous 

 and little likely to attract attention. The general colour both above and below 

 is grey, each feather being tipped with lighter grey ; while the wings are brown, 

 and the tail is glossy black, with a greenish lustre on the outer webs of its 

 feathers. 



This small genus, Gymnorhina, includes only three species, 

 popularly known as Australian magpies by reason of their black 

 and white plumage, which is common to both sexes, and never varies. 



Piping Crows. 



