WINTER WAYS OF ANIMALS 159 
the top of the beaver house and also prowled 
along the bottom of the dam. A number of 
mountain sheep had crossed the pond a day or 
two before. 
The pond was in a deep gulch and a goodly 
stream of water out of sight beneath the ice 
and snow was running into it. The concen- 
trated outflow burst out over the top of the 
south end of the dam through an eighteen-inch 
opening. This pond was frozen over for five 
months. For these five months the beaver 
each day had a swim or two in the water under 
the ice. When hungry he took a section of an 
aspen from the pile on the bottom of the pond. 
This was dragged under the ice up into the 
house, where it afforded a meal of canned green 
bark. 
Most summer birds fly away from winter. 
Other birds and a few animals travel a short 
distance—go to a place where food is more 
abundant although the winter there may not be 
any milder than in the locality in which they 
summered. Birds that remain to winter in the 
locality in which they summered, and most of 
the animals, too, go about their affairs as usual. 
They do not store food for the winter or even 
for the following day. The getting of food in 
the land of snows does not appear to trouble 
them. 
