1902.] 



F. Finn — General Notes on Variation in Birds. 



155 



evidently become accidentally detached from one toe. An enlarged 

 drawing of these feet is given below. 



FivE-TOKD Feet of Common Quail. 



As five-toed birds do not occur as natural species, this instance 

 may seem off the point, but it has its interest from the point of view of 

 Analogous Variation. 



In the London Zoological Garden last year there was a male 

 Curassow with the yellow nasal knob on the bill double, the extra part 

 being somewhat out of line with the normal lump, and extending behind 

 it. 



B. Some Colour- Variations in Wild Birds. 



The Garganey or Blue-winged Teal (Querquedula circia) is v^ry 

 liable to produce a pallid variation, in which the usual brown markings 

 are reproduced in a pale dun shade. These pale forms vary in pallor, 

 but do not grade into the normal type. Males and females are about 

 equally affected. The irides of such birds are normal, but their bills and 

 feet are flesh-coloured instead of slaty. A white Garganey I once saw as 

 a skin seemed, however to have had dark bill and feet. Mr. E. C. S. 

 Baker records (J.B.N.H.S., Vol. XII., p. 446), a Garganey with orange 



