520 BULLETIN 186, UNITED STATES NATIONAL MUSEUM 



gray or whitish) ; the mantle, rump, and upper tail coverts chestnut, 

 the wings black, the coverts and the secondaries tipped and outwardly 

 edged with chestnut, the inner primaries white at the base to form a 

 conspicuous patch; the central pair of rectrices black, narrowly 

 tipped with chestnut or rufous-white, the next three pairs black with 

 increasingly broad white tips, the two outermost pairs almost wholly 

 white ; the entire underparts white, more or less strongly washed with 

 vinaceous-buff. There is considerable variation in the depth of colors 

 of head and mantle and Delacour has named certain pale ex- 

 amples from Laos "griseicapillus" '; similar birds may occur any- 

 where in Thailand. Young birds, as seen with us, have the ear coverts 

 blackish brown and the crown and nape narrowly barred blackish 

 brown and dull rufous ; the mantle rufous, with wavy blackish cross 

 bars; the rectrices rufous-brown, with obsolescent darker cross bars; 

 the underparts white, more or less strongly washed with rufous-buff, 

 the feathers of the breast and flanks crossed by narrow, wavy black- 

 ish-brown bars. 



LANIUS CRISTATUS CRISTATUS Linnaeus 



Siberian Brown Shrike 



[Lanius] cristatus Linnaeus, Systema naturae, ed. 10, vol. 1, 1758, p. 93 (Bengal). 

 Lanius cristatus, Gyldenstolpe, Kungl. Svenska Vet.-Akad. Handl., 1913, p. 31 



(Ban Huai Horn) ; Journ. Nat. Hist. Soc. Siain, 1915, p. 167 (listed). 

 Otomela cristata, Gyldenstolpe, Kungl. Svenska Vet.-Akad. Handl., 1916, p. 41 



(Tba Chonrphu). — de Schauensee, Proe. Acad. Nat. Sci. Philadelphia, 192S, 



p. 562 (Chiang Mai). 

 Otomela cristata cristata, Gyldenstolpe, Ibis, 1920, p. 469 ("Several parts of the 



country"). 

 Lanius cristatus cristatus, de Schauensee, Proc. Acad. Nat. Sci. Philadelphia, 



1929, p. 459 (Chiang Mai) ; 1934, p. 221 (Chiang Mai ) .— Deignan, Journ. Siam 



Soc. Nat. Hist. Suppl., 1931, p. 146 (Chiang Mai) ; 1936, p. 123 (Chiang Mai). 



The Siberian brown shrike is a very common winter visitor to the 

 lowlands of Chiang Mai, where I have observed it from August 29 

 (1936) to May 4 (1935), but has been found elsewhere in our area only 

 at Ban Huai Horn, February 23, 1912 (Gyldenstolpe) and at Chiang 

 Kai, January 26, 1937 (Deignan) . This apparently anomalous distri- 

 bution may be at least partially explained by the fact that the principal 

 winter quarters of the race are in the countries to the west of Thailand. 



At Chiang Mai, this little shrike not only haunted roadside hedges 

 and the clumps of bushes bordering marshes and irrigation ditches 

 but often entered open spaces in parks and gardens where it would 

 employ as a lookout the coping of a well or the posts and backstops of 

 a tennis court. 



A female had the irides dark brown ; the maxilla horny black, with 

 the edges of the commissure bluish white ; the mandible bluish white, 

 tipped horny black ; the feet and toes slaty brown ; the claws black. 



