90 BULLETIN 186, UNITED STATES NATIONAL MUSEUM 



ArboHcola brunneipectus, Gyldenstolpe, Kungl. Svenska Vet.-Akad. Handl., 1916, 

 p. 156 ("Doi Vieng Par"=Doi Chom Hot). 



Arboricola brunneopectus brunneopectus, Gyldenstolpe, Ibis, 1920, p. 735 ("Doi 

 Vieng Par"=Doi Chom Hot). 



Arboricola brunneopectus, de Schatjensee, Proc. Acad. Nat. Sci. Philadelphia, 

 1928, p. 575 (Doi Suthep). 



Arborophila brunneopectus brunneopectus, de Schatjensee, Proc. Acad. Nat. Sci. 

 Philadelphia, 1929, p. 5S2 (Chiang Saen) ; 1934, p. 275 (Doi Suthep, Doi 

 Chiang Dao). — Deignan, Journ. Siam Soc. Nat. Hist. Suppl., 1931, p. 168 

 (Doi Suthep). — Chasen and Kloss, Journ. Siam Soc. Nat. Hist. Suppl., 1932, 

 p. 232 (Doi Suthep ) .—Deignan, Journ. Siam Soc. Nat. Hist. Suppl., 1936, 

 p. 79 (Doi Suthep).— Riley, U. S. Nat. Mus. Bull. 172, 1938, p. 63 (Khun Tan, 

 Doi HuaMot). 



The brown-breasted partridge, like the rufous-throated, is a bird 

 of the evergreen and replaces the latter at lower elevations. On Doi 

 Suthep it is very common from 3,500 feet (below which elevation the 

 jungle is unsuitable) to 4,500 feet, where it meets rufogularis. On Doi 

 Chiang Dao, where the evergreen stops at about 4,500 feet, rufogularis 

 is unknown but brunneopectus is extremely common. On Doi Khun 

 Tan, the highest point of which is about 4,500 feet and where the ever- 

 green is restricted in area, only brunneopectus is known and then is not 

 numerous. De Schauensee's record from Chiang Saen indicates that 

 the present species reaches the plains where there is suitable forest. On 

 Phu Kha it seemed to be the only partridge and was not common, but 

 the game birds of that mountain have been much persecuted by the 

 local tribes. 



As might be expected from the summary of distribution, the habits 

 of this speci&s seem to differ in no important way from those of its con- 

 gener. De Schauensee records (1929) that its "note is a musical three 

 note whistle repeated on a descending scale. The skin of the throat 

 is distended while the whistle is being delivered, plainly showing the 

 brick red color of the skin." 



De Schauensee states that a male had the irides sandy brown, with 

 a broad outer ring dark gray ; the orbital region crimson ; the skin of 

 the chin and throat, between the feathers, brick-red ; the bill black ; the 

 feet and toes deep flesh ; the claws fleshy horn. A male taken by me 

 had the irides brown ; the eyelids and orbital region crimson-lake ; the 

 bill black ; the skin of the chin and throat deep rose-red ; a fleshy ring 

 around the vent rose-pink ; the feet and toes old rose, tinged orange, 

 the tarsi golden-yellow behind ; the claws horny orange. 



This bird has the upperparts similar to those of the preceding form 

 but closely barred everywhere with black; the scattered feathers of the 

 throat and f oreneck white or buffy white with black tips ; the remain- 

 ing underparts bright buff, whitish on the belly and barred black and 

 white along the sides. The plumage shows considerable variation in 

 minor ways among different individuals. 



