References: 
CRAMP, S (ed) (1992). The Birds of the Western Palearctic Volume VI. Oxford 
University Press. 
PARMENTER, T. AND BYERS, C. (1991). A Guide to the Warblers of the 
Western Palearctic. Bruce Coleman Books, Uxbridge. 
B. K. Wright c/o The New English School, Box 60156, Hawalli Kuwait. 
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