A general rookery view from the cliffs, showing contrast between males and females by which 
harems can be counted. 
The young seals hide in the crevices of rocks and a large number of the mothers may be away at sea 
feeding, but it is easy to count the harem masters who are big and aggressive and are always at home. 
An approximate average of the females in a harem must often be applied to packed breeding areas where 
the bulls alone are conspicuous and individual enumeration impossible 
The process of counting fur-seal pups in the massed area on Hutchinson Hill, July, 1913. Note in 
the background of the photograph the long line of pups which are being counted as they file past. 
Fur-seal pups are easily counted only during a period of some ten days in early August. This is 
after they are a week or so old and the mothers no longer defend their young but depart leaving them 
to shift for themselves, and before they have learned to take care of themselves — in which later condi- 
tion of course they take to the water as soon as approached ; 
15 
