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