152 THE NESTS AND EGGS OF 



the Anderson river as warmly lined with dry grass as 

 well as with down and feathers, belonged, of course, to 

 the Nearctic form of this Goose, Anser albifrons ganibeli, 

 a larger bird with more black on the underparts, but 

 they may be taken as a fair description of the nest 

 of this species in its entirety, as I described it (with 

 the eggs) in m}^ work on British Gcnne Birds and Wild 

 Foivl. 



Range of egg colouration and measurement : 

 The eggs of the White-fronted Goose are from five to 

 seven in number ; ten have been found by Dall in 

 Alaska, but this refers to the Nearctic race. They are 

 creamy-white. Average measurement, 3'0 inches in 

 length by 2'0 inches in breadth. Incubation is performed 

 probably by the female, but the duration of the period 

 has not been observed. 



Diagnostic characters : I know of no character 

 by which the eggs of this Goose may be distinguished 

 from those of several allied species. They require the 

 most careful identification, or are otherwise worthless 

 as scientific specimens. 



