138 THE WORLD'S BIRDS. 



to Turkey ; it is much like the domestic dove, but 

 drab instead of fawn in colour. 



In North America the Passenger Pigeon (EctO' 

 pistes migratorius), a blue-grey bird with a long 

 tail, once excessively abundant, is now nearly ex- 

 tinct ; the only widely-distributed North- American 

 pigeon being the Mourning Dove (Zenaidura 

 macrura), a drab bird, about the size of the common 

 dove, but with a tail of more pointed shape. 



None of the true fruit-pigeons are found in 

 the New World, the fruit-eating species found 

 there being allied to the typical pigeons, such as 

 the Wood -Pigeon, and none are green ; of the true 

 green fruit-pigeons the best known is perhaps 

 the Hurrial (Crocopus phcenicopterus) of India, 

 a bird about as big as the house -pigeon, with 

 green and lavender plumage and yellow feet. 

 The large species called Imperial Pigeons are 

 well typified by that illustrated. 



The great Crowned Pigeons (Goura) of New 

 Guinea and adjacent islands, are well known in 

 captivity (at least, in the case of G. goura), and 

 are noteworthy, not only for their great size, 

 filmy fan-shaped crests and slate-blue colour, but 

 for having the shanks covered all round with 

 numerous small scales. 



The extinct Dodo and Solitaire were huge heavy 

 flightless Pigeons, referred to a separate family 

 (Didida). The existing Tooth-billed Pigeon 

 (Didunculus strigirostris) of Samoa, though it has 

 a very peculiar thick beak, is not so much like them 

 in this respect as the Thick-billed Green Pigeon 

 (Butreron capelln), closely allied to the Hurrial 

 above-mentioned. 



