VOL. IX. 



GREAT NORTHEUN DIVER. 



145 



young swam after her and soon remounted. She lowered 

 her back to assist them in doing so. 



Subsequently, when the young were in danger whilst 

 swimming, the female tried to draw attention to herself 

 by jumping straight up till she was nearly clear of the 

 \\ater in an upright position, a.nd also by rushing for a 



Fi^. 3. GREAT NORTHEKK DIVEIJ ARRANGING THE EGGS. 

 (Photographed by Eric B. Dunlop.) 



few feet ov^er its surface. The male now approached : 

 he had previously kept at a distance. They both uttered 

 their wild ^^-ailing cry. When heard together the male's 

 was noticeably the deeper pitched. 



This Diver has a great variety of calls. The usual wail 

 can be heard at a considerable distance. I also heard it 

 uttered in an undertone A\hen the birds thought them- 

 selves alone. It could then only be heard at close quarters. 



