BUREAU OF BIOLOGICAL SURVEY. 455 



in this district that they are becoming a menace to the welfare of the 

 wild fowl breeding there and must be reduced in numbers. Serious 

 depredations by them on the bird life, particularly during the breed- 

 ing season, call for active measures against them, and these will be 

 taken durin/j the coming winter. 



Salt River Bird Refuge., Roosevelt., Ariz. — On August 8, 1922, the 

 Secretary of Agriculture issued an order permitting the hunting 

 of migratory wild fowl on the eastern arm of Roosevelt Lake within 

 this refuge. This will give a limited amount of hunting in a region 

 where opportunities for this sport are exceedingly scarce, but "will 

 not seriously interfere with the welfare of the birds. 



MIGRATORY-BIRD TREATY AND LACEY ACTS. 



The helpful effect of the migratory-bird treaty act in increasing 

 the supply of migratory wild fowl continues to impress all observers 

 and to make friends for this legislation from its former opponents. 

 Unfortunately, the progress of drainage of fresh-water marshes 

 and lakes goes on rapidly, and unless enough of these areas can be 

 perpetuated to afford feeding and breeding grounds no hope can be 

 held out for the maintenance of the supply of these fine game birds. 

 During the j^ear representatives of the bureau have assisted State 

 game commissions and other conservationists to protect several 

 fine wild-fowl water areas from drainage, notably Swan Lake in 

 Minnesota and the Winneshiek Bottoms on the upper Mississippi. 



COOPERATION. 



The Biological Survey is deeply indebted to State game officials, 

 conservation organizations, and sportsmen from practically every 

 State for the fine spirit of cooperation extended by them, not only 

 in the enforcement of the law but in influencing public opinion for 

 its observance. Much effort has been made to build up and maintain 

 this cooperation, to which so much of the success achieved in increas- 

 ing our migratory wild fowl is directly attributable. 



WARDEN SERVICE. 



Approximately 28 full-time United States game wardens were on 

 duty through the year, aided by about 400 cooperative deputy 

 wardens. Of the last, 35 were placed on per diem duty during 

 short intervals in emergencies. Cooperative wardens receive a 

 nominal salary of $1 per annum, except when placed on active duty, 

 when they receive $3.50 a day with an allowance for expenses. 



Shortly after he entered the service and while in the i)erformance 

 of his duty, United States Game Warden Edgar A. Lindgren, of 

 Council Bluffs, Iowa, was brutally murdered by two Italians on 

 August 13, 1922, A United States attorney assisted the State aii- 

 thorities in the prosecution of the assassins, who were convicted in 

 the State court and sentenced to life imprisonment. Several other 

 Federal game wardens also were feloniously assaulted while in the 

 discharge of their duties, one with a loaded firearm, but fortunately 

 they were not seriously injured. The frequent occurrence of these 

 assaults on Federal wardens again demonstrates the great need of a 



78007— AGR 1923 30 



