omenclature
which is used in connection with these fowls and which differs from that
used for chickens. The male duck is called drake, the female duck is
termed duck, and the young duck of either sex is termed duckling. In
giving the standard weights for the different breeds of ducks, weights
are given for adult ducks and adult drakes, and for young ducks and
young drakes. By adult duck or drake is meant a bird which is over one
year old. By young duck or drake is meant a bird which is less than one
year old. The horny mouth parts of the duck instead of being termed beak
as in chickens are called bill, and the separate division of the upper
bill at its extremity is termed the bean. Ducks do not show any comb or
wattles as in chickens. In England use is made of the terms ducklet and
drakerel. Ducklet is used to signify a female during her first laying
season just as the word pullet is used in contrast to hen. Drakerel is
used to signify a young drake as contrasted with an older drake just as
the word cockerel is used in comparison to cock in chickens.
_Distinguishing the Sex._ The sex of mature ducks can be readily told by
their voices and also by a difference in the feathering. The duck gives
voice to a coarse, harsh sound which is the characteristic "quack"
usually thought of in connection with this class of fowl. The drake on
the other hand utters a cry which is not nearly so loud or harsh but
which is more of a hissing sound. Distinction of sex by this means can
be made after the ducklings are from 4 to 6 weeks old. Before this age,
both sexes make the same peeping noise.
Mature drakes are also distinguished from the ducks by the presence of
two sex feathers at the base of the tail. These are short feathers
which curl or curve upward and forward toward the body of the bird. In
ducks these feathers are absent.

Size
An idea of the size of the different standard breeds can best be
obtained by giving the standard weights. They are as follows:--
Adult Drake. Adult Duck. Young Drake. Young Duck.
Pekin 9 8 8 7
Aylesbury 9 8 8 7
Rouen 9 8 8 7
Cayuga 8 7 7 6
Muscovy 10 7 8 6
Blue Swedish 8 7 6-1/2 5-1/2
Crested White 7 6 6 5
Buff