eleventh series. 
Vox, III. No. 2. 
APRIL, 1921 
Price 12/6 net , 
THE IBIS, 
A 
PUBLISHED BY THE 
BRITISH ORNITHOLOGISTS’ UNION 
AND SOLD BY 
WHELDON & WESLEY, LTD., 28 ESSEX STREET, STRAND, 
LONDON, W.C. 2. 
TAYLOR AND FRANCIS, PRINTERS,] 
[RED LION COURT, FLEET STREET. 
