la considering these records It should lie tome ia Mad 
that cwny of the birds handed at the mouth of Bear Hirer, Utah, 
wore individuals that had not hrod there# Drake pintails and a 
few mllards begin to come Into that region after the first week 
in dune and continue to gather, perhaps from points far distant, 
from then until late in fall. Migration out to other points he- 
' ’ ' •' ; . , , ■ ’ ' ; / ‘ • t ■■■■■■ ' 
gins about the first weak in September, and there is a constant 
shifting of the waterfowl population during the fall as birds 
arrive from the north or leave for other points. She Bear Hirer 
bays begin to freeze about fhanksgiving time, and in normal years 
by SeosEtoer 1, ducks ere forced out of this region, although an 
occasional open winter may permit their sojourn until. In Canary 
or later. A few rotaain to winter in Utah in sloughs or channels 
kept open by spring water, but the majority perform extended flights 
to other regions. Some of the wintering aalls.rda pass a short distance 
northward into the Snake Hirer drains,ge in Idaho# 
