Read this description and look at a old picture of a American Gamefowl, sounds very close to the description of a Gamefowl.
I look at when the term dunhill was first used and who is still commonly using the term. The term was first used and is still used today by people with gamefowl so I tend to think they know what the term means if they were the first to use the term to describe a chicken.
Chris
Chris,
I disagree. The term was used by farmers concurrently. Here is the earliest mention you will find (I have been researching this topic for 2 years and have volumes of doc):
"Tell me now, if you please, Merula," said Axius, "what I should
know of raising and fattening poultry and wood pigeons, then we can
proceed to the discussion of the remainder of our programme."
"There are three kinds of fowls usually classed as poultry," replied
Merula, "
dunghill fowl, jungle fowl and guinea fowl.
The dunghill fowl
are those which are constantly kept in the country at farms.
"He who wishes to establish an [Greek: ornithoboskeion] from which, by
the exercise of intelligence and care, he can take large profits, as
the people of Delos do with such great success,[180] should observe five
principal rules: 1° in regard to buying, what kind and how many he
will keep: 2° in regard to breeding: 3° in regard to eggs, how they
are set and hatched: 4° in regard to chicks, how and by whom they are
reared, and 5°, which is a supplement of all the foregoing, how they
are fattened.
"The females of the dunghill fowl are called hens, the breeding males
cocks, and the males which have been altered capons. Cocks are
caponized by burning the spurs[181] with a hot iron until the skin is
broken, the wound being poulticed with potters' clay.
"He who wishes to have a model [Greek: ornithoboskeion] should equip it
with all three kinds of fowls, though chiefly the dunghill variety. In
purchasing these last it is important to choose fertile hens, which
are indicated by red feathers, black wings, unequal toes, large heads,
combs upstanding and heavy, for such hens are more likely to lay.
"A lusty cock may be known by his muscular carriage, his red comb, a
beak short, strong and sharp, eyes tawny or black, wattles a whitish
red, neck spotted or tinged with gold, the second joint of his legs
well covered with feathers, short legs long spurs, a heavy tail, and
profuse feathers, also by his spirit and his frequent crowing,
his
readiness to fight, and that he is not only not afraid of such animals
as do the hens harm, but even goes out to fight them. You must be
careful, however, not to buy for breeding any fowls of the breeds
known as Tanagran, Medean and Chalcidean, for, while they are
beautiful to look at and are fit for fighting with one another, they
are practically sterile.
From "Roman farm management: the treatises of Cato and Varro" circa 234-149 BC
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In fact, the way I interpret the last line, Merula doesn't have much use for "game fowl". If you have doc to the contrary I am very interested in seeing it, rather than here say and opinion.