Some Poultry Diseases Met With 
in Colorado 
By B. P. KAUPP 
When we consider the price of individual birds of common stock, most 
of us are apt to give little thought to the magnitude of the poultry industry 
of the United States or of our own State. 
With the increase in value of birds, particularly pure bred, some of 
which are worth as much as the average dairy cow, it is evident that more 
attention to their diseases is needed. 
It is estimated that the poultry population of Colorado is approximately 
2,700,000, of which about 2,500,000 are chickens, 100,000 turkeys, 50,000 
ducks, and 50,000 geese and other birds. 
It is estimated that 15,000,000 dozen eggs and 25,000,000 pounds c: 
chickens are consumed in Colorado annually. Of this quantity consumed, 
it is probable, according to the estimates made by Mr. W. E. Vaplon, of the 
Poultry Department of this Station, that only about one-half is produced 
within the State. He further estimates that there is imported into the State 
annually about $4,000,000 worth of eggs and poultry products. It will thus 
be seen that there is excellent opportunity, in this State, for increased pro¬ 
duction of this kind of foods. 
With these facts before me, and with the additional stimulus of ffequent 
requests for information on diseases of poultry, I undertook the task of 
studying these diseases, and have been greatly aided by the Poultry Depart¬ 
ment of the college and others, particularly local poultry raisers. The present 
paper gives a brief account of this work. I have endeavored to give illus¬ 
trations which will aid poultry people to recognize disease conditions and 
symptoms, and to understand the treatment of sick birds and the means of 
eradicating contagion when such exists. 
Plate I is a drawing made by Mr. W. E. Landt, from a healthy hen, 
prepared in the laboratory for the purpose. It is hoped that this object lesson, 
with the explanation which will be found on the opposite page, will be helpful 
to a better understanding of the anatomy of the hen. 
The paper includes parasitic and other diseases, as well as a brief discus¬ 
sion of methods of detecting hens with diseased ovaries, and non-layers due 
to other causes. The non-laying hen is too expensive to keep. 
i 
