iheroduceioh. 
She Bear River marshes at the north end of Great Sait Lake, Utah, 
a region highly attractive to wild ducks and other waterfowl, are i known as 
one of the great centers where sash birds gather in the west. She migratory 
movements of large numbers of birds that visit this region are necessarily 
of interest and importance. In the period from 1914 to 1916 the writer, 
while engaged in the study of a sickness among ducks due to an alkali poison¬ 
ing, prevalent in the Salt Lake marshes, had opportunity to band and release 
a considerable number of ducks and other birds, a fair proportion of which 
were killed subsequently in other regions. Reports already published have 
M imp.ll—.I WW I HHm. ■■■ — II.I M II H— I . 1 — I —n ..11.,'l in ill—. no .!., in. <» » . .Il .IIIW HiMlM. ' l ll— HH . n i'1 ,1 1'll i. llll T ll M 'i , 
made on the author* s investigations of the duok sickness in 
Utah are contained in bulletins of the U. S, Department of Agriculture as 
follows? Ho. 217, Mortality among Waterfowl around Great Salt Lake, Utah 
(Preliminary Report), 10 p.3 pis., 1916; and Ho. 672, She Puck Sickness in 
Utah, 25 p. f 4 pis., 1918, Other reports baaed in part on investigations then 
made aro contained in Bulletin Ho. 793, Load Poisoning in later fowl, 12 p., 
2 pis,, 1919; and Ho. 936, Wild Ducks and Buck Foods of the Bear River lushes, 
Utah, 20 p., 4 pis,, 1921. 
IDEE. - Shis bulletin is a report cm a study of the migratory movements 
of waterfowl and other birds, based cm banding operations carried on in Utah 
from 1914 to 1916, It is for the information of sportsmen, ornithologists, 
and others interested in bird migration and the protection of game birds. 
dealt with the so-called duck sickness, and have detailed methods by which a 
considerable number of the birds affooted were cured. Before such individuals 
wore set at liberty a numbered band of aluminum was plaood on one leg, and 
record made of the number, the species of bird, and the date of release. In 
addition to wild docks a number of young of other marsh birds were marked in 
a similar manner before they were able to fly. She release of these banded 
birds was given publicity, and reports on bands recovered have been received 
from widely scattered sections in the United States and even from Canada and 
Mexico. An aocount of these records is presented in detail in this bulletin. 
