AMMOPERDIX HEYI. 



Hey's Sand Partridge. 



Perdue Heyii, Temm. PL Col. 328, 329.— Jard. Nat. Lib. Orn., vol. iv. Game Birds, p. 91. 



PerdixJZavirostris, Ehrenb. 



Caccabis Heyi, Gray and Mitch. Gen. of Birds, vol. iii. p. 508, Caccabis, sp. 6. 



This beautiful little Partridge inhabits the extensive plains and rocky districts of Arabia, and doubtless 

 extends its range to the confines of Persia, and there inosculates with the Ammoperdioo Bonhami. The merit 

 of its discovery is due to M. Hey, the companion of that intrepid traveller Dr. Riippell ; and that of first 

 making it known to science to the veteran ornithologist M. Temminck, who assigned to it the specific name 

 of Heyi as a just compliment to its discoverer, and who has published in his "Planches Coloriees" an 

 excellent figure and description of it from specimens killed by M. Hey in the deserts of Acaba in Arabia. 

 As is the case with the Ammoperdioo Bonhami, the sexes differ considerably in colour, and both species, 

 unlike the true Red-legged Partridges, are destitute of spurs. 



Hitherto no living examples have been brought to this country, a circumstance which is to be regretted, 

 since no member of its tribe would form a more interesting addition to our aviaries. 



The male has the general plumage deep buff, washed with dark grey on the crown and cheeks ; rump, 

 upper tail-coverts and centre tail-feathers sandy buff, pencilled and barred with brown ; lateral tail-feathers 

 chestnut ; primaries brown, blotched on their outer margins with buff; secondaries and tertiaries pencilled 

 with black ; lores and stripe behind the eye white, bordered above and below with a darker tint ; breast 

 deep buff; under surface chestnut and white, each feather margined with black; under tail-coverts reddish 

 buff; bill orange ; feet olive-yellow. 



The female has the entire plumage greyish buff, mottled and pencilled with a lighter hue, and black, and 

 with a wash of reddish buff on the shoulders and back. 



The Plate represents the two sexes of the natural size, from fine specimens recently brought from Arabia 

 by Lord Robert Clinton. 



