DUCK DOLLARS 27 
Exterior of Brooder House 
The hot-water heater (coal for fuel) is in that end of the house nearest the 
eye. The brick chimney leads straight up from the heater pit. Note the 
ventilators at regular intervals in the roof. Never build a tight house for ducks, 
but always provide for ventilation. 
The small structure in the foreground is a simple shelter for ducks outdoors 
to protect them from the sun and the rain. The posts are three feet high. The 
ducks know enough to go under the shade without urging, whenever their well- 
being demands that they should. 
Ducks need fresh air, and in building the houses 
provision should be made for ventilation. Tight houses 
are not to be built. 
If you have a tight house full of ducks, and keep them there three 
or four days and nights in bad weather, the inside of the house will grow 
very warm, and ammonia from the manure will rise, making your own 
eyes and the eyes of the ducks smart. 
Every 100-foot house should have two ventilators through the roof, 
and should also have windows at the back to be opened when needed. 
These windows should be managed according to the weather. 
Early in the morning, when you go into a house filled with ducks, 
you will see the hot air and ammonia fumes going off from the venti- 
lators. 
If no provision whatever is made for ventilation, and a large num- 
ber of ducks are kept in a house, the air will get so bad 
Fresh Air 
Necessary 
that some ducks will actually go blind from the irrita- Blindness 
: . 3 ane from 
tion of their eyes by the ammonia rising from the : 
Ammonia 
manure. 
