Nov., 191o 
REPORT UPON DISEASE AA1(.)NG DUCKS 
225 
intravenously with % cc. of live blood from sick birds. No ill effects could be 
noted. 
{/) September 25, 1913. Two Spoonbill ducks from the State Game Farm 
were placed in a cage at the edge of rhe lake. These were given good food and 
lake water. Both died in less than five dar's. 
(8) September 25, 1913. Three Spoonbill ducks were placed in a cage at 
the edge of the lake. These were given good food and artesian water. They re- 
mained healthy. 
(9) September 27, 1913. One normal duck (Spoonbill) was placed in a coop 
with the sick ducks at station A. It remained well throughout. 
(10) September 27, 1913. One noimal duck (Spoonbill) was placed in a 
coop with several dissected birds. On October 3 the bird got head in crack and 
strangled to death. 
( 1 1 ) Three birds were placed in a cage with good water containing chopped- 
Fig. 76. Remains oe birds, chiefly ducks, along slough at northeast side of 
Buena Vist.v Lake, Kern County, California; coyotes, coons, etc., had been 
feeding on the dead and dying birds here for Two MONTHS OR MORE; 
photographed October 9, 1913. 
up parts of sick birds. Birds remained healthy. 
(12) October 3, 1913. Three birds were confined in cage on lake. In cage, 
at water level, was set a platform, over which was placed a tight box, but con- 
taining entrance for birds. Artesian water and good food were provided. The 
experiment was to test effect on the birds of the gases which arose from the lake. 
This experiment was carried on only four days. Experiment not carried on long 
enough for definite results. 
Thus, the examinations made and the experiments carried on tended to prove 
that the cause of the trouble lay in the lake water, either as a mineral or as an or- 
ganic constituent. 
At present, analyses of the water and gases of the lake are being made and 
experiments are being carried out to confirm or refute our conclusions regarding 
this duck disease. Some time will be required before all this data can be ob- 
tained. 
