This is from the American Poultry Association (APA) Standard of Perfection book, 2010 edition. I don't have the newest edition so I just used the 2010 edition.
AMERAUCANAS
This breed was developed in the 1970s in the United States. It resulted from efforts by persons who admired some of the traits of the Araucana but did not want to contend with some of the self-limiting factors inherent in that breed. Thus, developing a practical fowl for home food production flocks that had the unique feature of pastel colored egg shells together with relatively small head furnishings and a plump, well-feathered body became the goal of these breeders. Ameraucanas lay eggs with blue shells and therefore are directly linked to with the Araucana stocks brought to the U.S. in the 1930s. Subsequent crossbreeding created a diverse genetic base from which dedicated breeders have evolved the Ameraucana breed with uniform and distinctive features. Ameraucanas were admitted to the Standard in 1984.
ECONOMIC QUALITIES
A general purpose fowl for the production of meat and eggs, the latter having distinctive blue shell coloration.
DISQUALIFICATIONS
Presence of ear tuffs, absence of beard and muffs, yellow soles of foot or toes.
(See General Disqualifications and Cutting for Defects.)
STANDARD WEIGHTS
Cock .............................. 6 1\2 lbs. Hen .............................. 5 1\2 lbs.
Cockerel ........................ 5 1\2 lbs. Pullet ........................... 4 1\2 lbs.
SHAPE -- MALE
COMB: Pea, relatively small, higher in center than front or rear.
BEAK: Strong, curved.
FACE: Nearly hidden by muffs.
EYES: Expressive, relatively large.
WATTLES: Very small, preferably absent.
EARLOBES: Small, oval.
MUFFS AND BEARD: Full, well-rounded, medium length, forming three separate lobes.
HEAD: Relatively broad and medium size.
NECK: Well-arched, medium length.
HACKLE: Full, abundant, flowing well over the shoulders and nearly meeting at front of neck.
BACK: Medium length, broad, carried slightly elevated at the shoulders.
SADDLE: Medium in length, abundant, providing smooth transition to angle of tail.
TAIL: Well spread, medium length, carried at 45° above horizontal, sickles well-curved.
WINGS: Fairly large, tips carried above the hock joint, fronts concealed by the hackle.
BREAST: Prominent, well-rounded.
BODY AND STERN: Body of medium length, stern well-tucked up.
LEGS AND TOES: Medium length, set apart, four toes, straight and well spread.
SHAPE -- FEMALE
COMB: Pea, small.
BEAK: Strong, curved.
FACE: Nearly hidden by muffs.
EYES: Expressive, relatively large.
WATTLES: Very small, preferably absent.
EARLOBES: Small, oval, pale.
MUFFS AND BEARD: Full, well-rounded, medium length, forming 3 separate lobes.
HEAD: Relatively broad and medium size.
NECK: Medium length, slightly arched.
HACKLE: Full, moderately long.
BACK: Medium length, relatively broad, slightly elevated at the shoulders.
CUSHION: Moderate, providing smooth transition to angle of tail.
TAIL: Medium length, well spread, top two feathers slightly curved, carried at 45° angle above horizontal.
WINGS: Fairly prominent, carried well-folded and above the hock joint.
BREAST: Full, well-rounded.
BODY AND STERN: Full but trim, fluff well-tucked up.
LEGS AND TOES: Legs set well apart, medium length, four toes, straight and well spread.
BLACK AMERAUCANAS
COLOR -- MALE AND FEMALE
COMB, FACE, WATTLES, AND EARLOBES: Red, except female earlobes to be very pale, matching color of the skin.
BEAK: Black.
EYES: Reddish bay.
SHANKS AND TOES: Very dark slate to black, bottoms of feet and toes white.
PLUMAGE: See description of Black Plumage Color, page 34.
From page 34...
[BLACK - Male and Female; Plumage: Surface -- lustrous greenish black.
Undercolor -- (except where otherwise specified) dull black in dark-legged varieties; slate in yellow legged varieties.
]
BEARD AND MUFFS: Black.
BLUE AMERAUCANAS
COMB, FACE, WATTLES, AND EARLOBES: Red, except female earlobes to be very pale, matching color of the skin.
BEAK: Dark horn.
EYES: Reddish bay.
SHANKS AND TOES: Slate to black, bottoms of feet and toes white.
PLUMAGE: See description of Blue Plumage Color, page 37.
From page 37...
[BLUE - Male
HEAD: Glossy black.
NECK: Hackle -- an even shade of clear bluish slate, distinctly laced with with glossy black.
TAIL: Main Tail, Main and Lesser Sickles, Coverts -- an even shade of clear bluish slate, each feather distinctly laced with glossy black.
WINGS: Fronts and Bows -- an even shade of clear bluish slate, each feather distinctly laced with glossy black.
Coverts -- an even shade of clear bluish slate each feather having a sharply defined lacing of black.
Primaries -- an even shade of bluish slate.
Secondaries -- lower webs, an even shade of clear bluish slate; upper webs, clear bluish slate, each feather distinctly laced with black.
BREAST: An even shade of clear bluish slate, each feather having a sharply defined lacing of black.
Fluff -- clear bluish slate, laced with black.
LEGS: Lower thighs -- an even shade of clear bluish slate, each feather having a sharply defined lacing of black.
UNDERCOLOR OF ALL SECTIONS: Bluish slate.
BLUE - Female
HEAD: Bluish slate.
NECK: Hackle -- an even shade of clear bluish slate, distinctly laced with black.
Front of Neck -- same as breast.
BACK: An even shade of clear bluish slate, each feather laced with black.
TAIL: Main Tail and Coverts -- an even shade of clear bluish slate, each feather each feather laced with black.
WINGS: Fronts, Bows, and Coverts -- an even shade of clear bluish slate, each feather having a sharply defined lacing of black.
Primaries -- an even shade of clear bluish slate.
Secondaries -- an even shade of clear bluish slate, distinctly laced with black.
BREAST: An even shade of clear bluish slate, each feather distinctly laced with black.
BODY AND FLUFF: Body -- an even shade of clear bluish slate, each feather distinctly laced with black.
Fluff -- an even shade of clear bluish slate, laced with black.
LEGS: Lower Thighs -- clear bluish slate, each feather distinctly laced with black.
UNDERCOLOR OF ALL SECTIONS: Bluish slate.
]
BEARD AND MUFFS: Blue.
Unfortunately they didn't have Splash Ameraucanas included in the book so therefore I do not have a description for them.
