recoveries were used in other tables; other reasons are indefinite 
location codes and elimination of percent distribution determinations 
from States or Provinces with bandings which resulted in less than 10 
recoveries. 
As yet, no species is adequately represented by bandings of 
"locals" over all of its breeding range, and others, such as the 
green-winged teal, are not adequately represented in any location, 
PART 1--DISTRIBUTION OF 
DIRECT RECOVERIES OF TEN SPECIES 
Method of Analysis 
Recoveries were first grouped on the basis of the production 
area from which they were derived- So that the data would be most 
useful, two different groupings of banding locations were used in 
summarizing data in this section of the report- First, the banding 
locations were grouped according to strata into which duck breeding 
areas are divided for aerial census (fig- 2). Distribution of banded 
duck recoveries in the four flyways is presented in tables 1 through 10. 
The second grouping of banding locations was by States and 
Provinces- In tables 11 through 19 this grouping is related to State, 
Province, and flyway of recovery- Some production areas are not 
assigned to aerial census strata; recoveries from bandings in these 
areas may be examined in the analysis of distribution from States and 
Provinces. 
Results 
Mallards 
The most significant feature of the distribution of mallard 
recoveries was the high percentage of recoveries in Canada from band¬ 
ings in Canada and Alaska- This ranged from more than 40 percent of 
recoveries from ducks banded in Alaska and Saskatchewan to 56 percent 
in Alberta and 63 percent in British Columbia (tables 1 and 11). 
Adjacent production areas usually had similar harvest patterns, 
and there was only a gradual shifting of harvest east or west corre¬ 
sponding to the location of the area of production- 
Recoveries within the contiguous States of mallards banded in 
Alaska were almost exclusively in the Pacific Flyway. Almost half 
of the recoveries within the United States from bandings in Alberta 
were in the Pacific Flyway with the remainder about equally divided 
3 
