""■jB*** 
flora birds that had hem at freedom for over a year were badly worn and 
after two years became thin and friable, Though in one instance a band 
more than four years old was recovered it is probable in most birds that 
chanced to survive beyond a period of three years the bands had worn until 
•vW-d 
It- had broken and w&J^loet. fo be used successfully therefore, such bands 
A 
should be made of material of twice the thickness used for ordinary poultry 
bands, trfof* " M>fa ~ l * ffl <*«« nn * ^ fr> a ctual - fr iction la-rand 
■ 1 ' „ \ , i ■ i ; V } ■ - - : ' v ‘ . ' ‘ . ■ ‘ 1 ' ; ; ■' 
at mr a fora of . elooteolyfli i s fondue erl *vhar n til 
s-ali ne- wa t e r a. 
nsat* 
rtuCt in the Or e at fe e in. 
bo g nogllgiblo ' faotor in duoto s 
From the total of 1241 banded birds that have been released 180 
’ i . ; ' ' \ ? '■ 1 '‘ t ‘ ' ‘ ’* "’. ’ :■ ■ 
returns have been received, or somewhat more than 14 per cent. Of the 
whole number of birds marked 904 were duGks of which 174 were reported. 
The 
iber of returns from birds of this group, a little more than 17 
per cent, indicates the results that may be obtained from work in banding 
birds of this family. 
/ 
©is returns from all of the records cover a vast area extending 
from western Missouri and Kansas west to California, and from Mexico to 
i Qo. 
Saskatchewan. 
the westward from the Salt lake Talley to California, a route follovred by 
the green-winged teal and shovellers, and part of the mallards and pintails. 
Another lot of birds that Includes cinnamon teal, redheads, pintails, and 
mallards crosses to the great plains region and travels south into Texas. 
Indications are that some of these fly north and east to oross the divide 
separating Snake Biver from the head waters of the Missouri to follow down 
east of the foothills of the Rocky Mountains. That all follow this route 
Vi4. l) 
J A study of these results indicates one line of flight to 
