It’s less than a week before our Mustang Walkabout™ begins. I have a new camera this year (Canon 5D Mark IV), and a new lens. I will bring my old Canon 7D with the new lens (24-105mm). My camera bag/knapsack weighs more than my suitcase, so I have a luggage cart (and a ton of bungee). It is compliant with carry on size, and I simply remove my iPad and I’m good for the flight. My wardrobe consists of lightweight shorts, polo shirts, work boots, Crocs for relaxation at the campsite, and the usual undergarments. Karen has all my toiletries packed in Arizona, and I bring my medications, and any personal items.
All new camera cards. I start purchasing next year’s cards when I return. approximately one or two per month. This way it isn’t a huge expenditure right before the Walkabout. Karen is on Facetime.Packing the giant Loewpro knapsack. It weighs more than my suitcase.
We both carry snake gaiters into the horse range, and use them if we have to tread where we cannot see our feet. The Prairie Rattlesnake is the only venomous snake found in Sand Wash Basin. They are small, reclusive, and prefer to escape, rather than fight.
My car service picks me up early Wednesday and my flight leaves at 6am. I’m on the train to New York City for a busy and fun day at my medical office. I always find it amazing that I will be in the Basin tomorrow, but seeing patients today in NYC. Stay tuned for daily blog posts from the 2023 Mustang Walkabout.
Karen is a already on her way to the Basin… with her faithful pug companion, Koko.
Our last full day Basin went well. We saw a ton of horses, and moved the trailer to the entrance to facilitate departing early tomorrow. We drive to Denver which takes about 7-8 hours because of the trailer. My flight leaves Saturday from Denver International Airport.
The weather has been spectacular, ranging from 70s-80s 6°F (21-26.6°C ) and dropping to the low 50s°F (10°C) at night. There were some thunder storms, which make the Basin extremely treacherous when the rainfall turns the roads to soup.
People ask what we out on the range, so we’ll start with breakfast. We generally stick to foods that can be made with water: oatmeal, cream of wheat, and coffee. Sometime cold cereal is eaten out of a container if we’re hungry later in the morning. We have ice most of the time (we go to town 1.25 hours away from our campsite every 2-3 three days), so our beverages are kept cool along with cheese and deli meat which constitutes lunch. We discovered ‘Snarky Tea’ this trip which is made in the sun (sun tea). They have caffeinated, and decaf options and for those of you in a more civilized environment, you can make it in the fridge.
The afternoon was spent visiting waterholes all over the Basin. Horses drink between 15-35 liters daily, more if they are lactating/pregnant, injured, or the temperature is high. We check the waterholes and the surrounding areas for horses. It can take time to find horses since Sand Wash Basin is so large (157,730 square acres/63,831,0663.square meters). After a winter of heavy snowfall, the Basin has water. The downside is many horses perished, although precise counts are not possible while the horses are scattered across the Basin because the terrain is difficult to traverse.
This stallion took his time walking off the road. Stryker spend a lot of time near our campsite.When we settled the trailer at the entrance of Sand Wash Basin, we were joined by Thor (grullo, right) and Doyle (dark liver chestnut, left)The Boys continued to keep us companyWe kept our distance, but it was nice to see the stallions quietly observe us going about our routine.The sunsets at Sand Wash Basin are spectacular. Tonight was not exception.
Today was spent entirely in the Basin. The weather was iffy, so we didn’t go to far from camp. We did see a lot of horses on Lookout Mountain, and a few bands came into Copper Pond.
Horses drinking at Copper Pond Horses climbing the hill behind Copper PondKaren shooting some horses Mammatus clouds. Usually forecast thunderstorms and sometimes, tornados Grey stallion on Lookout MtThe old ‘shoot from the car’ since the horses were close, we do not leave our vehicle.
Karen is a brilliant artist. She wanted to paint a horse from life, and Meteor and his bachelor band obliged us by standing still for an hour. It was uncanny, and almost as if they knew she was painting a portrait. The storm over the Bears Ears also held off as well. The horses: Mr. Kitty (grey), Astro (black), Orion (bay), Coronado (dark/liver chestnut pinto), Remington (chestnut), Meteor (palomino pinto). Our family named Orion when he was a wee colt, 2014.
The BoysKarenKaren painting from life Mr Kitty & CoronadoRemington, Meteor, Astro & OrionMeteor Shower: Painted from life by Karen McLain. Available for purchaseOrion as a foal
Finally, I rescued a Prairie Rattlesnake off the road this morning. The weather has been cooler l, and they are sunning on the road to warm up. Under no circumstances should you attempt this yourself; we carry a snake hook and I know how to use it.
We move the snake because they are inadvertently killed because they blend in with the road, or deliberately killed because some people are butt heads. Either way, the little fella is safe off the road.
The day ended with a rainbow and some beautiful light over the Bears Ears. Good night all!
Today we had the unique opportunity to attend the Moffat County Tourism Association Monthly Board Meeting. At the meeting, Pat Craig of the Wild Horse Refuge, was invited to speak. Pat patiently answered questions and gave a more depth explanation regarding the refuge’s business model. Eventually, the goal is for the public as to be able to see the horses by appointment. There will be no fee, but a donation is appreciated.
He put to rest concerns that the horses might be fed to the predators at the other facility run by the WildAnimal Sanctuary. Pat said the carnivores are fed via donated meat from retail stores such as Walmart. They receive 100,000 lbs of meat weekly. The Refuge horses and property cost approximately 14 million dollars, so why would he spend that sort of money to provide snacks for carnivores?
The Animal Sanctuary is very well equipped and funded. At the Wild Horse Refuge they have:
-Snow cats & D6’s for snow, they are aware of the snowfall in Colorado and are prepared
-Three vets on staff & farrier
-Range specialist surveying the land to ensure the appropriate number of horses. 3,500 of their acreage is BLM land. They are paying a lease for the land.
-Eventually 100-200 horses total
-They pay taxes even as a not-for profit; this help the community
-They buy all supplies from local merchants
-They own fire trucks, fire equipment and have helped communities with this equipment in emergencies
-They have hay, abundant water sources, and generous supplies of fencing and other repair equipment (graders, backhoes, big hoes etc)
We returned to the Basin for the evening and found some old friends at a waterhole. We got some stunning photos with spectacular lighting.
Saturday was a town day. We go into town for supplies (ice mostly), and showers, and gas for the truck. We usually go in in the morning, and spend the rest of the afternoon for photography. We did take time out for weather. Weather at Sand Wash, in particular, thunderstorms, can be quite dangerous the road turn to soup, and roll-overs have been known to occur.
Sunday we had a wonderful time at the Piceance HMA with Kathy, the president of the advocacy group for that HMA. It is larger than Sand Wash, and very rugged. The horses are solid colored, and perfectly lovely. The advocacy group does wonderful things for these horses.
Monday was a highlight of our 2023 Mustang Walkabout. We went to The Wild Horse Refuge approximately thirty miles from Sand Wash Basin. One hundred horses from the Sand Wash Gather will live here on 22,500 acres. It was wonderful to see some old friends. Both Karen McLain Studio and Equus ferus -Wild horse Photography each purchased one acre. Please check them out here
The first gene we look at is the E or Extention gene. Simply put, it determines RED or BLACK. A horse with two EE or Ee appears black, and ee appears red (chestnut). True black is a fairly uncommon horse coat colour, so where are all the black horses? To answer that, we need the Agouti gene.
E
E
e
Ee
Ee
e
Ee
Ee
Extension gene
The Agouti gene A, determines how much black appears on the coat. This gene ONLY acts on black, so chestnut horses are unaffected. AA: Black is restricted to the points (legs, mane, and tail) Bay Aa: Black is restricted to the points (legs, mane, and tail) Bay aa: Black all over (Black)
A
A
a
Aa
Aa
a
Aa
Aa
Genotype
Phenotype
EEAA EeAA EEAa EeAa
EEaa Eeaa
eeAA eeAa eeaa
There is one more gene at the Agouti locus (Locus refers to where on a chromosome the gene is found). It is the At or Seal brown, and this third allele has been recognised to explain the colour Seal Brown – a black horse with red/tan muzzle, flank folds, chest, underarms, and inner ears, which is also referred to as ‘Black & Tan’ due to similarities in colour in canines & rabbits (Doberman, Gordon setter, Rottweiler, French bulldog)
AA: Black is restricted to the points (legs, mane, and tail- Bay)- most dominant Aa: Black is restricted to the points (legs, mane, and tail- Bay) AtAt: Black is somewhat restricted (Seal Brown) Ata: Black is somewhat restricted (Seal Brown) aa: Black all over (Black)- least dominant
Genotype
Phenotype
AA/AAt/aa (Bay)
AtAt (Dark Seal Brown: appears darker than Ata)
Ata (Lighter Seal Brown: appears lighter)
aa (Black)
At Seal Brown
Some more Seal Brown examples.
Brave from Sand Wash Basin may be a Seal Brown with a more reddish tone or a Bay with an exceptional amount of the Sooty Factor (For a brief review of the sooty factor, go here). The foal shows light areas in the typical locations for Seal Brown (see list below). Areas with tan/red colour:
Muzzle- sides, chin, & top. (the very end of the muzzle is usually dark grey)
Beneath the eyes
Flank folds (where the hind legs meet the abdomen)
Underarms
Chest
Underbelly
Front of Stifle (the area just behind the flank fold on the hind leg, ‘knee’)
Quarters (back of thighs)
Base of ears
Ear tips
The first photo is by the talented Kathy Simpson of Rabbitbrush Photography. Used with permission from SWAT: Sand Wash Wild Horse Advocacy Team. The second photo is by Equusferus and Brave clearly demonstrates the lighter “soft areas” (muzzle, beneath the eyes, flank folds, chest, underarms, underbelly, front of the stifle, quarters (backs of the thighs), and inner ears).
Presenting a brief review of inheritance. In humans, brown eyes are dominant over blue (except in rare circumstances). We’ll use them as our example. Traits are usually represented by letters. Uppercase is dominant, and lowercase is recessive. Brown eyes =BB, and blue eyes = bb. You have two because you inherit one from each parent. For the biology review, we’ll keep it simple, although eye colour is more complex in reality. Two same letters, BB or bb, indicate the person inherited two of the same gene for eye colour from each parent. This is referred to as homozygous (meaning the same).
B
B
b
Bb
Bb
b
Bb
Bb
Dominant Inheritance
B
B
b
Bb
Bb
b
Bb
Bb
Say one parent gives a B and a recessive or lowercase b. The parent has brown eyes but has a hidden recessive b (Bb). This is because B is dominant and overrides the recessive gene b, and the eyes appear brown. If a parent is Bb and they have children with a blue-eyed parent, 50% of the children may have brown eyes, and 50% may have blue. The parents with one dominant and one recessive gene are called heterozygous or “split” for the trait Bb.
B
b
b
Bb
bb
b
Bb
bb
Dominant inheritance
B
b
b
Bb
bb
b
Bb
bb
INCOMPLETE DOMINANCE
“Incomplete Dominance” is where the combination of traits from each parent results in an intermediate colour. In the case of carnations, breeding white and red carnations result in pink flowers; the traits are blended.
Cr
Cr
Cw
CrCw
CrCw
Cw
CrCw
CrCw
Incomplete dominance
If we take the flowers from above, all pink, and breed them together (second generation), we find the genes align the same way as the parents. CrCr= red, CwCw= white, and CwCr =pink.
Cr
Cw
Cr
CrCr
CrCw
Cw
CrCw
CwCw
Incomplete dominance
CODOMINANCE
Some carnations exhibit “Codominance where the trait from each parent is observed without blending, so instead of pink, the flower appears red and white.
The great “family bands” saga continues. I received a fair number of comments suggesting I don’t know anything about wild horses or that I don’t know anything about rescues. Neither is true, but that’s not the impetus behind this post. The sanctuary in question blocked me within an hour of the original post. So much for transparency or any attempt at civil discourse. I decided to change the horses’ names back to their real ones on the original post, though the rescue shall remain nameless.
I received some interesting remarks and posts regarding “The Myth of the Wild Horse Families” on other pages where it appeared. Here is my take on this based on an actual rescue and the bidding that went on for the assumed relatives of Picasso from Sand Wash Basin. This is my opinion, but I believe their aspirations have become a bit clouded. Additionally, they are allowing the horses to live free with minimal interference as they did on the range. This is incredibly dangerous for everyone involved in their care. Any rescued horse needs to be familiar with a halter, and lead rope, behave for the farrier, and administration of medication or general care. You don’t have to ride them, but they are no longer wild. Again, a wonderful idea to let them be free, but their judgement is rather questionable and harmful for everyone involved, including the horses (or they send a bill to the general public for a squeeze chute when an emergency arises…).
It’s disingenuous to presume any of us know the true motives of a given wild horse rescue. We can only base these assumptions on their social media posts and observable decision-making. However, obliterating your entire operating expenses for the next two years on one horse is indefensible. That fiscally irresponsible decision is even worse when these rescues are dependent almost entirely upon the public’s goodwill. In effect, they decided for every one of us that it is a good idea to spend $21,000 on various horses under the premise they are a “family” and, therefore, deemed more valuable. Then they hand us the bill for their reckless improvidence. Based solely upon this scenario, I firmly believe they are insincere in their efforts because they’re acting without judgement, solely on emotions, and basing their decisions on mythical ideology. They want to save mustangs, but primarily the most beloved and their entire extended family under the presupposition the public will gladly pay for this marvellous opportunity.
Two direct quotes from the sanctuary are presented below. I am never, ever suggesting that these horses do not need homes. They do, and I feel that must be stated unequivocally. I also understand well-known horses bring attention to a rescue or sanctuary. It is a sad state when the public appears to favour the support of primarily popular mustangs, but that can be overcome. We can try for equality over popularity and to recognize the intrinsic value of all rescued wild horses. Mustangs are resilient; they form new bonds, and old bonds may fall in disfavour. There are plenty of rescues that do wonderful work; I am involved with several. I am asking the sanctuary, and similar ones, why the focus is based on hypothetical genetic relationships? In a world where we don’t know the true relationships especially given Picasso’s death and that his body was never found. We will truly never know if any horses are related to him or even each other, so why spend the time and enormous sums of money on that assumption? It all comes back to money.
Banking on sentimentality and the popularity of a particular wild horse is not a guarantee any rescue/sanctuary will continue to receive donations. I honestly don’t object to a rescue that adopts a family of wild horses or a known bonded pair. My issue is the postulation they assume the public will be willing to pay for any exorbitantly priced animals and their upkeep for the remainder of the animal’s life. It’s a lot to ask.
“Researchers have found that, as with humans, individual bonds within bands may be more important than group identity. These bonds are sometimes based on family ties, but often they are just based on individual preference. These preferences can and do change: friendships come and go, foals grow up and depart to live elsewhere, male-female relationships sometimes work out and sometimes don’t. As a result, the social lives of horses are nothing if not tumultuous. Indeed, long-term observation of these animals in the wild is like following a soap opera. There is a constant undercurrent of arguing, of jockeying for position and power, of battling over personalspace, of loyalty and betrayal” (Williams, 2015, p.3).
The marketing of wild horse rescue groups is a multimillion-dollar industry. As of late, there have been a lot of rescues pushing the “keep family bands together” narrative to part you from your hard-earned money. Nature does not work this way… ever.
There was a lot of interest in the Sand Wash Basin wild horses. I will preface this by stating that anyone who offers a home to a wild horse or rescued domestic horse is wonderful. I owned two rescued off-the-track Thoroughbreds myself. However, the concept of keeping mares with their sons and daughters, or stallions with mares in their former band, is absolute horse manure.
At the age of 1-2 years for colts, and 1.5-2.5 for fillies, the dams and stallions kick these horses out of their natal band. The stallions do not want their sons around to compete with them for mares, and mares are generally expecting their next foal or even have last year’s foal and a new foal on the way (Goodwin, 2010). Mares rarely tolerate their two-year-olds (and older) nursing, although there are exceptions, such as Echo, Cloud’s son. He stayed in his natal band long past the usual time. If the young horses remain, there is a risk that these young horses will eventually breed with their fathers, mothers, sisters, or brothers (Berger, 1986).
Wild horses, Onaqui UT
The horse that created one of many controversies was a horse named Snip, the son of the famous mustang Picasso. He had a small band of mares and two colts in 2020. Two of his many mares are Amber and Marina, and Marina is also Snip’s presumed daughter. A wild horse rescue was/is hell-bent on getting the two colts (Sheridan &. Toma) reunited with their mother(s). They have Marina at the moment. This would reunite Marina with her son Sheridan who is now two years old. In spite of being in Snip’s band, we don’t know that Marina’s foal is actually Snip’s foal. We do know that Marina’s sire is likely Snip, which would mean he might have bred his daughter. Marina also could have snuck off and was bred by another stallion or bachelor nearby. Also, Snip may not be the father of Toma… do you all see where this is going?
Silverado, Sand Wash Basin CO
There are no guarantees that the so-called ‘family bands’ are related. Also, Sheridan is an unmarked bay colt. There are many unmarked bay colts on the range, and the rescue stated the horse they wanted to bid $7,000 on was “believed to be” Marina’s colt. That’s a lot of money for a maybe… Marina would have kicked all two-year offspring and older out of the band; few parents want their 28-year-old child living in their basement. Finally, Snip is gelded. His interest in the mares may have shifted because he has lost the desire to breed.
Keeping family bands together is a lovely sentiment, and I won’t deny that some horses form very close bonds with one another, related genetically or otherwise. The concept of ‘wild horse families’ is a myth, not based in reality whatsoever. There is a very good statistical chance the horses in a band are unrelated except on the matrilineal lineage. The statistics are as high as 33% that the band stallion is NOT the sire, a Jerry Springer-sque situation common on the wild horse ranges. Parents routinely breed with their offspring, and genetic relationships are a jumble of guesses.
Owl, the dam of Michelangelo (Picasso’s grandson), had already kicked him out of the band. or he left of his own accord. Why would a rescue want to try to reverse what Mother Nature deems best and put those two back together? It goes completely against Nature. My guess is over-anthropomorphizing. Complete families are something we, as humans, believe to be stable and desirable. These are horses where mares change bands routinely, stallions take over bands weekly, mares are not faithful, and incest is prevalent.
(Bowling, 1990)
There is no denying that rescued horses need good homes. Why do rescues who rely on donations insist on tricking the public into thinking paying enormous sums for specific horses is a wise choice? If wild-horse rescues truly believed in the welfare of the horses, they would not spend thousands on famous horses. They would put that money towards the upkeep of ordinary horses who need homes. Sadly, having well-known horses or their progeny drives their price up considerably, but what about future care? Once the excitement of having one of Picasso’s, Cloud’s, or another well-known mustang’s offspring wears off, who will pay for food, and vet care, not to mention the labour that goes along with all of this?
We need to stop exploiting, anthropomorphizing, and romanticising wild horses and simply provide decent homes for all. They are all beautiful, and they all deserve fair treatment, especially the ordinary ones.
Bay foal, Onaqui UT
References
Berger, J. (1986). Wild horses of the Great Basin: Social competition and population size. University of Chicago Press.
Bowling, A. T., & Touchberry, R. W. (1990). Parentage of Great Basin Feral Horses. The Journal of Wildlife Management, 54(3), 424–429. https://doi.org/10.2307/3809652
“ I do not need to tell you to curry the Godolphin Arabian,” he smiled with his eyes. “Already his coat is the color of honey when held in a jar against the sunlight.”
Marguerite Henry’s description of Sham, the Godolphin Arabian, stayed in my mind from the moment I read the book ‘King of the Wind’ as a little girl. Bay horses: a combination of fiery red, and coal-black have captured the imagination of people for millennia.
Heber Bay Stallion, Apache and Sitgreaves National Forests, Arizona (PLEASE TAP/CLICK ON THE PHOTOGRAPHS TO VIEW A LARGER VERSION)
Colour in animals serves many useful purposes such as ‘concealment, communication, and regulation of physiological process’ (Corbin, et al, 2020). Horses were domesticated approximately 5,500 years ago and selective breeding resulted in the vast array of horse types and colours we see today.
All horses receive two alleles from each parent that determine the base colour. An Allele is each contribution by parents- denoted as EE (each parent contributed one E), or Ee (one parent contributed E, the other parent contributed e). These alleles are located at specific locations on a chromosome called a loci/locus.
Base colours are red or black. The horse begins with the MC1R, or Melanocortin 1 Receptor locus. This determines black or red and is designated by E.
EE Black Ee: Black ee: Red
Bay Mare, Salt River, Arizona
Next, the locus that contributes to colour is called the ASIP or Agouti Signaling Protein which determines where the black will appear, either all over, restricted to parts of the body, or only the points (lower legs, mane, tail, tips of ears). There are several subtypes (A, At, A+).
In order to control black, the horse must have at least one E gene (EE, Ee), otherwise, the ASIP has no effect, so no black appears with ‘ee’ and the horse is chestnut.
AA: Black restricted to points, red body (Bay) Aa: Black restricted points, red body (Bay)
AtAt: Seal Bay (black is less restricted, resulting in a dark horse with reddish areas on the ‘soft areas: muzzle, over the eyes, elbow, flanks, in front of the stifle, back of buttocks).
Ata: Seal Bay (black is less restricted, resulting in a dark horse with reddish areas on the ‘soft areas: muzzle, over the eyes, elbow, flanks, in front of the stifle, back of buttocks).
aa: Black all over, it turns off all red when EE or Ee is present (ee only results in chestnut colour).
A+A+: Wild Type Bay (Mane and tail are black, may have some red. Black on points is limited to the fetlocks, or has red hair mixed in, not solid black lower legs)
A+A: Wild Type Bay (Mane and tail are black, may have some red. Black on points is limited to the fetlocks, or has red hair mixed in, not solid black lower legs)
A+a: Wild Type Bay(Mane and tail are black, may have some red. Black on points is limited to the fetlocks, or has red hair mixed in, not solid black lower legs)
*Wild Bay are uncommon to rare
MC1R
AGOUTI
EEAA
Bay
Homozygous
Homozygous
EeAA
Bay
Heterozygous
Homozygous
EEAa
Bay
Homozygous
Heterozygous
EaAa
Bay
Heterozygous
Heterozygous
eeAA
Chestnut
Homozygous
Homozygous
eeAa
Chestnut
Homozygous
Heterozygous
eeaa
Chestnut
Homozygous
Homozygous
EEaa
Black
Homozygous
Homozygous
Eeaa
Black
Heterozygous
Homozygous
Other coat colour modifications:
There are links to other coat modifications we posted for the Equine Genetic Series (they appear as live links when you wave your mouse over the word).
SHADE: There is a gene responsible for how light or how dark the colour appears. It is not well understood, but researchers found an independent locus close to the ASIP locus. A different gene called the sooty gene can cause a coat to appear very dark, and dilutions such as the Cream or Dun gene lighten the coat of horses. But ALL horses have a base coat of Red or Black or the absence of both (white).
Bays of varying shade, McCullough Peaks, Wyoming
SOOTY: Some horses have the ‘sooty factor’ which can darken the coat of any horse. The genetics are not well understood (link to sooty).
PANGARÉ: Some horses have pangaré also called mealy where the soft areas (muzzle, over the eyes, elbow, flanks, in front of the stifle, back of buttocks) are light, or pale. (Link to pangaré)
FLAXEN: Commonly seen in chestnut horses, this gene lightens the mane and tail to a pale blonde color. Again, genetics are not well understood. Two bay horses can produce a chestnut with a flaxen mane, so it is possible it is present in bay horses genetically, simply not expressed (visible).
Group of Bays, (and chestnut, buckskin, greys), McCullough Peaks, Wyoming
Bay (in front), Bay Duns behind, Pryor Mountain, Montana
Seal Bay. Although dark, note the red/lighter areas on the face, flank, elbow, stifle. McCullough Peaks, Wyoming
A non-fading black horse, note the color around the muzzle remains black. Little Book Cliffs, Colorado
Same horse with a Chestnut Dun. Note the lack of light areas. Non-fading black horses are uncommon, most black horses fade to a reddish-brown in summer, BUT the muzzle always remains black/dark. Little Book Cliffs, Colorado
Wild Bay, Assateague Island, Maryland (Also exhibits pangaré)
Wild Bay, Assateague Island, Maryland (same horse as above) Personal note: Most of the Wild Bay types have orange hair at the base of the tail on top. You can easily see it here.
Wild Bay, Sand Wash Basin, Colorado
Wild Bay, Salt River Arizona (With pangaré: Note the pale muzzle, flank, stifle,)
Wild Bay and Wild Bay Roan, Salt River Arizona
Wild Bay, Salt River Arizona (same as above)
Wild Bay, Salt River Arizona (Note the legs have quite a bit of red/brown- they are not solid black).
Wild Bay, Sand Wash Basin, Colorado
Bays with Modified Coats
Bay Dun (Dun gene acting on a Bay coat lighten the coat to a golden colour, removing red. Black is not affected
Buckskin: One Cream gene acting on a Bay coat lighten the coat to a golden colour, removing red. Black is not affected. Onaqui/Great Desert Basin, Utah
Perlino (Two Cream genes acting on a Bay coat lighten the coat and mane/tail to pale cream, subtle darkening of the points are present (mane, tail lower legs). Onaqui/Great Desert Basin, Utah
Bay Roan. Onaqui/Great Desert Basin, Utah
Bay Roan. Pryor Mountain, Montana
Bay Tobiano Foal. Onaqui/Great Desert Basin, Utah
A famous Tobiano/Overo Bay, Picasso from Sand Wash Basin, Colorado (in memoriam)
Also, Picasso, making identification a challenge!
We hope you enjoyed the Bay Horses. Stay tuned for more exciting posts in the Equine Genetic Series brought to you by Karen McLain, Meredith Hudes-Lowder & Equus ferus Wild Horse Photography
References Corbin LJ, Pope J, Sanson J, Antczak DF, Miller D, Sadeghi R, Brooks SA. An Independent Locus Upstream of ASIP Controls Variation in the Shade of the Bay Coat Colour in Horses. Genes. 2020; 11(6):606. https://doi.org/10.3390/genes11060606
Gower, J. (1999). Horse color explained: A breeder’s perspective. North Pomfret, VT: Trafalgar Square.
Henry, M., & Dennis, W. (2017). King of the wind: The story of the godolphin arabian. Aladdin Paperbacks, an imprint of Simon & Schuster Children’s Publishing, Division.
Jacobs LN, Staiger EA, Albright JD, Brooks SA. The MC1R and ASIP Coat Color Loci May Impact Behavior in the Horse. J Hered. 2016 May;107(3):214-9. doi: 10.1093/jhered/esw007. Epub 2016 Feb 16. Erratum in: J Hered. 2016 Sep;107(5):479. PMID: 26884605; PMCID: PMC4885240.
Kathman, L. (2014). The equine tapestry: An introduction to horse colors and patterns. Charlotte, NC.: Blackberry Lane Press.
Sponenberg, D. P. (1996). Equine color genetics. Ames: Iowa State University Press.