Wild Mountain Farms
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    • About the Rocky Mountain Horse >
      • History of the Rocky Mountain Horse Breed
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      • Basic Genetics Expanded
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      • Horse Color Genetics >
        • Basic Color Genes
        • Special Color Genes >
          • Special Color Details
        • The Colors >
          • Red
          • Bay
          • Black
          • White
          • Gray
          • Chocolate
          • Cream Gene Colors >
            • Palomino
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            • Black Buckskin
            • Cremello
            • Perlino
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          • Paint
          • Roan
          • Appaloosa Horses
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horse Colors: BAY

Bay or Brown Horses

In horses, a brown body color with black mane, tail and legs, is usually called bay. This indicates a brown or red body with black on the mane, tail and legs.

Bay is the most common color among horses.​

Picture

Genetics:  A bay horse must have a dominant E gene. Thus it could either be: (EE) or (Ee) . The A gene (responsible for lightening the horse to bay instead of leaving it a solid black) must also have at least one dominant A gene, and thus could be either (AA) or(Aa). Thus, the genetic options are...
  • (EE) and (AA)
  • (EE) and (Aa)
  • (Ee) and (AA)
  • (Ee) and (Aa)
​​

Description:  Bay horses have a brown or red body color with black mane, tail and (usually) legs. The black on the legs often bleeds into the brown body color as it reaches higher up on the legs.
​
Picture
This Bay horse has an almost red body color but a black mane and tail. His legs have some red, fading to black.
Picture
This Bay horse is a very typical bay with a light-brown body, black mane and tail and mostly black legs.
Picture
This mare is a very dark bay. Could easily be mistaken for black.

Foal Colors
Though many horse colors are significantly different at birth from their appearance as adults, Bay horses are generally born looking pretty similar to how they will look as adults. Their body color will be anywhere from red to dark brown and their mane, tail and legs will be black.
Picture
This foal was born looking pretty close to what he looked like as an adult, with just some lighter hairs in mane and tail.
Picture
Picture
This foal was born looking pretty close to the colors he grew into as an adult.
Picture
Other Color Genes Mixed With bay
​
Paint - If a paint horse's base color is bay, then the paint will be a tricolored paint with a body color anywhere from red to almost black, a black mane and tail and legs, all interrupted by random, large splotches of white.
Roan - If a roan horse's base color is bay, it will be what is known as a bay roan, having all the normal coloring of a bay horse with interspersed white hairs all over the body, legs, mane and tail.

Other Colors Easily Mistaken for Bay

There are a other colors which are sometimes be mistaken for bay.

Chestnut - The bay coloring can sometimes produce a red body, but a bay horse's main and tail are always black, whereas a red horse's main and tail are either red or white, so these is easily distinguished from each other. Additionally, some bay horses can be mistaken for chestnut at birth. Many bay horses are born with lighter mane and tail, thus making them look more like chestnuts at birth. (see bellow)
Picture
Picture
This Bay horse has a very red body color, but the black mane and tail make it impossible to mistake for Chestnut or Sorrel.
Black - Many black horses look bay when young or exposed to excessive sunlight. Some even retain enough brown in their coats to look bay until they reach 4-5 years old. 
Picture
This horse ultimatly turned black, but was much better described as bay until he reached 4-5 years of age.
Buckskin - A particularly dark buckskin may easily be mistaken for a bay. The buckskin gene lightens the body color of a bay horse, usually making it closer to tan or gold. But occasionally the lightning effect will be slight enough that it is hardly noticeable.
Black Buckskin - A black buckskin horse is almost always mistaken for either a bay (brown) or black horse. In this case, the buckskin gene routinely fails to lighten the body color enough to distinguish the horse from a non-lightened horse. Often the only way someone finds out that their horse is black buckskin instead of bay or black, is when it unexpectedly produces a palomino or obviously buckskin foal.
Picture
We called this horse brown for many years, not realizing she was a black buckskin until she unexpectedly produced a palomino foal.
Dun - A particularly dark dun may be easily mistaken for a bay. In this case, the dark dorsal stripe may be hidden by blending into the darker body color, and the primitive markings on face and legs may only be noticeable when the horse is in summer coat and in bright sunlight.
Picture
This dun horse is easily mistaken for a classic bay, especially in winter when her coat is darker and shaggier.

Red Chocolate - Some red chocolates horses may be mistaken for bay at certain times in their lives. Many of them have enough black in their mains and tails that they appear to be a bay horse. (The Red Chocolate horse is, by the way, actually derived from a bay base color, not a red one. The Chocolate gene (also known as the Silver Dapple gene) alters the horse's coloring much less than a normal chocolate horse whose base color is either Red or Black and who has the distinctive brown body with the flaxen main and tail.)
​
Picture
This Red Chocolate horse has enough dark hair in her mane and tail to almost be mistaken for a bay horse.
Gray - All gray horses start out a different color. A gray horse with a bay base color could easily be mistaken for a bay until it gets older and its coat starts to turn.
Picture
This filly began looking speckled with white within a year and turned solid white by the time she was ten years old.
Other - There are a lot of colors which could be bay or may be something else and are hard to tell for certain without a genetic test.
Picture
We loosely classify this horse as bay but because of the unusual distribution of brown and black (and because her mother has a few special color genes) we may be wrong. She may be something else all together.
YOUR MARE: Is your mare bay?
return to horse colors overview

Location

raising rocky mountain horses
​for every rider

Because when the mountains are wild,
the horse shouldn't be!

Wild Mountain Farms
PO Box 209
25111 Mill Creek Rd.
Frenchtown, MT  59834
406-239-4748
info@WildMountainFarms.com
Christie and Dave Goodman

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  • WildMountainFarms
  • About Us
    • Ishmael by Daniel Quinn
    • Christie's Writing
    • Dave
  • Our Stallion
    • 2021 Breeding Season
    • 2020 Breeding Season
    • The Breeding Process
    • Schedule Your Breeding
    • Breeding Contracts and Fees
    • Color and Our Stallion
  • Education
    • About the Rocky Mountain Horse >
      • History of the Rocky Mountain Horse Breed
      • Other Mountain Horse Breeds
      • What They Look Like
      • Temperament of the Rocky Mountain Horse
      • What They Do
      • Where to Find a Rocky Mountain Horse
      • Cost of a Rocky Mountain Horse
      • Genetic Testing
    • Breeding Education >
      • Deciding to Breed
      • Choosing a stallion
      • Getting Started
      • Breeding Costs
      • Breeding Basics >
        • Timing Details
      • AI vs Live Cover
      • Pre-Breeding Preparation
      • Breeding Contract
      • Live Foal Guarantee
    • Basic Genetics >
      • Basic Genetics Expanded
    • Color Genetics >
      • Horse Color Genetics >
        • Basic Color Genes
        • Special Color Genes >
          • Special Color Details
        • The Colors >
          • Red
          • Bay
          • Black
          • White
          • Gray
          • Chocolate
          • Cream Gene Colors >
            • Palomino
            • Buckskin
            • Black Buckskin
            • Cremello
            • Perlino
            • Smokey Cream
          • Champagne
          • Paint
          • Roan
          • Appaloosa Horses
    • Raising a Foal Right
    • Transporting Horses Long Distance >
      • Transport Paperwork
      • Transport Equiptment (Big)
      • Transport Equiptment (Small)
      • Feed and Water For Transporting
      • Driving Practices for Transporting
      • Transport Tips
  • Horses For Sale
    • Stormy-SOLD!
    • Smudge-SOLD!
    • Copper-SOLD! >
      • Copper Stories
  • Our Horses
    • Lady
    • Cowgirl
    • Belle
    • Sugar
  • Our Animal Partners
  • Our Human Partners
  • Contact Us
  • Western Montana Riding Trails
  • The Pacific Crest Trail
    • Who We Are >
      • Why and What
      • Christie
      • Kaladin
      • The Horses
      • Riding Companions
      • Local Resources
      • Home Team
    • Strategy and Goals
    • PCT Basics
    • PCT Water
    • PCT Safety
    • PCT Timing
    • PCT Maps
    • PCT Permits
    • PCT Resources
    • PCT Contacts
    • PCT Gear >
      • backpacking gear List >
        • Shelter >
          • Tents
        • Sleeping Bag
        • Sleeping Pad
        • Camp Chair
        • Water Purifier
        • Water Reservoir
        • Kitchen Gear
      • horse packing gear
      • dog packing gear
      • safety gear
      • photography gear
      • packing organization
  • AirBnB Cabin
  • Wildflowers of Western Montana
    • Arnica
    • Arrowleaf Balsamroot
    • Bear Grass
    • Biscutroot
    • Bitterroot
    • Buttercup, Sagebrush
    • Buttercup, Common
    • Bluebell
    • Cinquefoil
    • Deptford Pink
    • Fleabane
    • Glacier Lily
    • Goldenrod
    • Harebell
    • Indian Paintbrush
    • Kinickinick
    • Larkspur
    • Lupine
    • Mouseeared Chickweed
    • Oregon Grape
    • Oxeye Daisy
    • Pasque Flower
    • Prarie Smoke
    • Salsify
    • Shooting Star
    • Thistle
    • Wild Hyacinth
    • Wild Onion
    • Wild Rose
    • Wild Strawberry
    • Wild Sunflower
    • White Campion
    • Woodland Star
    • Yarrow
    • Plant ID Books I Like
  • Goats
    • Goat Enclosures
    • Feeding Goats >
      • Feeding Dwarf Goats >
        • Dwarf Goat Hay
  • Sheep
  • Horsepacking
    • How Many Horses
  • Sheep