Winter Trend Data - Pacific Flyway 
In the PACIFIC FLYWAY, conditions during the winter survey 
period were generally good with the exception of the Central Valley in 
California, In this area there was extensive flooding of agricultural lands 
which rendered ground counts impossible. The bulk of this portion of the survey, 
therefore, was conducted by airplane using aerial photographic methods. It is 
believed, however, that data regarding total numbers of ducks is comparable to 
previous years. 
Percent Change in Pacific Flyway (Continental) Population Index Figures for 
Ducks, Geese, Brant, Swan, and Coot - January 1955 to. January 1956 
(Comparable Coverage) 

Area Ducks Geese Brant swan Coot Total 
Alaska ~45 -5]1 - ~84 - -45 
Canada* -35 ~44 - 32 -ll +21 - 34 
Pacific Flyway . 
States +19 +11 - 2 +33 +21 +18 
Mexico, West 
Coast -18 +41 -31 +53 -16 
Total 5 a +10 ~19 +31 +23 +10 
* British Columbia and Alberta 
