^1? ELEVENTH SERIES. 



^^ Vol. III. No. i2. 



APRIL, 1921. 



Frice 12/6 net. 



THE IBIS, 



QUARTERLY JOURNAL OP ORNITHOLOGY. 



KDITED BT 



WILLIAM LUTLEY SCLATER, M.A. 



PUBLISHED BY THE 

 BRITISH ORNITHOLOGISTS' UNION 



AND SOLD P,y 



WHELDON & WESLEY, LTD., 28 ESSEX STREET, STRAND, 

 LONDON, W.C. 2. 



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