54 WATCHED BY WILD ANIMALS 
beaver house each young beaver started in turn 
as though to climb to the top, poor Mother 
Robin became almost hysterical. At last, de- 
spite all her fears, her entire brood was brought 
safely off. 
During the summer, a majority of the Broken 
Tree beavers abandoned the colony and moved 
to other scenes. A number built a half-mile 
down stream, while the others, with one excep- 
tion, travelled to an abandoned beaver colony 
on the first stream to the north. Overland this 
place was only half a mile from the Broken Tree, 
but by water route, down stream to the forks 
then up the other stream to the colony, the dis- 
tance was three miles. This was an excellent 
place to live, and with but little repair an old 
abandoned dam was made better than a new 
one. All summer a lone beaver of this colony 
rambled about. Once he returned to the Broken 
Tree colony. Finally, he cast his lot with the 
long-established colony several miles down 
stream. 
Late this summer a huge landslide occurred 
on the stream above the Broken Tree pond. 
The slide material blocked the channel and 
formed a large, deep pond. From this dam of 
débris and the torn slope from which it slipped 
came such quantities of sediment that it ap- 
peared as though the pond might be filled. 
