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Distribution. — Europe and Asia, 

 Passes Yangtse Valley on migration. 

 a few remaining in north China to 

 breed. 



CROWNED WILLOW WARBLER. 



ACANTHOPNEUSTE CORONATA (tEMM). 



Description. — Length five and one 

 half inches. Bill large, upper mandible 

 brown, lower yellowish. Tarsus plum- 

 beous. Iris hazel. 



Crown greenish brown, with yellow 

 median stripe. A long prominent 

 yellow eyebrow. Rest of upper parts 

 yellowish green, washed with brown 

 on the back. Wings brown, feathers 

 edged yellowish green. Two distinct 

 yellowish wing bars. Below yellowish 

 white, deeper yellow on the ander 

 tail coverts. This Warbler is readily 

 recognized by the large size of 

 its bill, and by the yellow median stripe 

 on the crown, and the yellow under 

 tail coverts. 



Distribution. — Siberia, China, Japan, 

 Java, and India. A migrant in the 

 Yangtse Valley, usually passing in 

 April. 



ARCTIC WILLOW WARBLER. 



ACANTHOPNEUSTE BOREALIS (bLAS.) 

 Description. — Bill dusky, yellowish 

 at base of lower mandible. Tarsus 

 yellowish flesh color. Iris brown. 



Upper parts olive green, lighter on 

 the rump. Greater wing coverts 

 yellow, or gray at their ends. A long 

 yellow or whitish eye-brow. Below 

 white, washed with yellow. Sides of 

 the breast olive gray. 



