
show a slight increase in goose production. Production at Washoe Lake, 
the most important goose nesting area in the State is up 143 perzent over 
last year. The molting goose population at Pyramid Lake was down 12 
percent. 
Conclusions - 
It is estimated that the fall flight of both ducks and Canada geese 
from Nevada will be somewhat larger this year as compared to 1955. 
BRITISH COLUMBIA 
Weather and Water Conditions - 
During most of April and the first three weeks in May the survey 
area was blanketed by a high pressure cell resulting in clear warm | 
weather and an early season. At the time of our survey the season was 
approximately two to three weeks ahead of the previous year. There | 
was no ice, and run-off from above average snowfall the previous winter 
had raised water levels throughout the district. No flooding had yet 
occurred in the Rocky Mountain Trench, but the water was rising 
rapidly in Columbia and Kootenay Rivers and flooding could be expected 
in a reasonably short time. At the time of our survey Canada goose 
broods were just appearing in the Trench. If flooding did not material- 
ize forsanother 10 days it is probable that a successful hatch of geese 
can be expected. 
Breeding Population Indices - 
Table I - Birds Observed in Rocky Mountain Trench. 

Species oo 1955 ae 1956 
Canada Goose 1,445 1,435 
Snow Goose - i 
Swan 64 ot : 
Mallard 412 590 
Baldpate 152 119 
Green-winged Teal 12 23 
Blue-winged Teal - 3 
Canvasback , | - fs | 22 
Continued -- 
28 
