346 



TETRAONID^E. 



Leipsic in ] 766, has given a coloured representation of the 

 egg of Urogallus hybridus, tab. 15, fig. 2, intermediate in 

 size, and placed between the eggs of the Capercaillie and 

 Black Grouse, with a short reference to, and description of, 

 each, at page 33, as follows : Fig. 1. Auerhahn. Urogal- 

 lus major. Ovum coloris rubiginosi, hinc inde maculis 

 parvis obscurioribus notatum. Fig. 3. Birkhan. Urogallus 

 minor. Ovum priori simile, sed minus. Fig. 2. Zwitter 

 vom Auerhahn und Birkhenne. Urogallus hybridus. Ovum 

 dilutius, maculis majoribus. 



I have referred, in the article on the Pheasant, to the 

 singular change which takes place in the plumage of some 

 of the females among Pheasants, and other birds, by which 



