JOURN. Limn. Soc, Zool. Vol. XXXV. Pl, 15. 
Fig. 7. — Two female Whitethroats (Sylvia cinerea) fighting for 
a male and his territory ; the male watching. 
Reproduced by permission from E. Howard, ' The British Warblers.' 
Pig. 8.— a pair of Willow -Warblers (Phiillo^^eopas trochilus); 
simultaneous performance of wing-flapping ceremony. 
Reproduced by permission from E. Howard, ' The British Warblers.' 
