Tata Collected 
epring Breeding-Ground Surrey 
Aerial Survey in Uanada: Since there are no comparable past data for 
reference, the etatus or trend of the waterfowl population cannot be ehown. 
Table 1 and Map 1 giving locations of transects, other routes of travel, 
and populaticne recorded are, however, included for those interested in 
determining relative productivity of varloue arepe. The approximate flight 
time le included aleo as a further ald, although the number of ducka ceen 
per hour of flying may not always be an accurate indication of relative 
nroductivity. The type of habitat may be an important consideration. 
The trangect, so succeseful on the prairies, produced, in the 
Maritimes snd southern Quebec, a count of ducks that wae much lower than 
that produced there by coverage of definfte waterfowl areas. 
Transect rune throughout moet of the lake country in southern Nova 
Scotia are practical, eince the hille are relatively low, but after about 
Of hours of flying traneetcte and covering completely hundreds of lakes and 
mugkege, only 49 black ducke were recorded. Much the eame low productitity 
of the lake country was found during the summer ground eurveye. The same 
may be said for the lake country of New Brunswick and southern Quebec. Direct 
overland trangecte, some of them 75 =~ 100 miles long, usually produced no 
black ducke and rarely more than #1zx. 
From the aerial date obtained it le readily apparent that, of the areas 
eurveyed, the big producera cof ducke are the 5t. John Biver valley, the tidal 
marehee of Nova Seotia and Frince Baward Ieland, the coastal region of 
Anticosti Island, and the marehee of the Lake St. Feter area, above Quebec. 
The lake and muskeg country surveyed in the Maritimes and southern Quebec 
produced relatively few ducks. Froductive waterfowl habitat proved to be 
reetricted to limited cosetal marehea, tidal inland rivere and mershee, 
inland freeh marehes, and marehy ponds (eee ground survey). 
At the time the aerial survey had started, the greater part cf the 
black duck population had apparently abandoned territories and were congre- 
eating in relatively large flocks. %It 1le thought that most of these birde 
were drakes, although some hene were noted. In future surveye it is important 
that the gex composition of these flocks and the proportion of non-breeders, 
if any, be detervined. 
Co-operator Survey in U. 5. Following is o summary of the average total 
number of paire and other adults on 184 of the areae for which reports were 
received, 
Specter Number Fairg Other Adultg 
Black duck 561.0 Te? 7 
Mallard 244.0 2nd .4 
Wood duck 128.3 23.4 
Gadwall 28.1 6,0 
Blue-winged teal 124.6 91.5 
Green-winged teal 11.2 5.2 
Ring-neck duck 47.6 33.8 
Golden-eye 11.8 94.2 
Canada goost 140.0 - 7.0 
90 
