12 
GUIDE TO THE 
during flight. This bird is found in Bengal (Rajmehal 
and Purneah), Northern India, and as far south as Madras. 
It breeds amongst long grass in marshy places. It is 
occasionally sold in the Calcutta market. 
The Ruddy Sheldrake, Casarca rutila , is also generally 
present. This duck, which is very widely distributed in 
India and Burma in the cold weather, is spread in pro¬ 
fusion over the greater part of Asia, and occurs also in 
Northern Africa and Central Europe, extending to Britain. 
It has been observed breeding by Plooker in Sikkim and 
Ladakh. It is commonly known as the Brahmani duck. 
The Grey Goose or Lag, Anser cinereus , is generally 
to be found in this pond. It annually visits India during 
the winter, and is frequently seen in large flocks. It 
breeds in Northern Europe and Asia, and is the stock 
from which all the domesticated varieties of geese appear 
to have been derived. 
This pond also presents some examples of the Bar-headed 
or Indian Goose, Anser indicus , which appears during the 
cold weather in vast flocks, and which returns in spring to 
its breeding quarters north of the Himalayan range. 
The Canadian Goose is also represented. The marked 
feature of this bird is its black head and neck, with a 
broad patch of white spreading from the neck over the 
cheeks on each side. It occurs in the United States of 
America and in Canada, and its “ migrations extend from 
the lowest latitude of the United States, to the highest 
parallels that have been visited in the Northern regions 
of America.” It has been introduced into England where 
it has thriven well, and the bird in this tank has readily 
accustomed itself to the climate of this country. 
Taking now the broad path to the left, a narrow road 
