76 POULTRY FOR PROFIT 
This is especially true of the lighter birds, 
which possess larger head parts than do the 
heavier breeds. When a bird has its comb or 
wattles frozen, it will stop laying for a con¬ 
siderable period of time, usually a month at 
least. If birds are found on a cold winter 
morning with frozen combs, they should be 
treated with snow or cold water, to take out 
the frost, and then treated daily with vaseline 
until cured. It is well to provide a pole up 
near the roof of the poultry house, upon which 
a curtain, made of burlap or some old cloth, 
is arranged so that on cold winter nights this 
curtain can be lowered directly in front of the 
front perch. This will tend to protect the 
birds from the excessive cold, by conserving the 
heat given off by their bodies during the night. 
CHAPTER XIV. 
CULL THE FLOCK 
When the poultry industry was being estab¬ 
lished upon a business foundation, many of the 
leading breeders devised the idea of measuring 
the egg capacity of their birds by actually 
counting the eggs laid by their best birds. This 
