The striped filly above is not a zorse, but the offspring of the two horses below!
The foal, Mayabel, was damed by the black mare and sired by the brown stallion, both Gypsy Vanners. The breeding stable is called Orcas Island Feathered Horses.
From the photos, it looks like Mayabel was born with just a dorsal stripe, and the zebra-like photos are at 3 months old. There isn’t any info (or even mention) on the stripes on the website. I’m willing to bet that horses have retained striping genes when they separated from zebras, genes which are usually suppressed in the womb. (Can anyone comment on this?) Other non-zebroid equines also ocassionally have stripes on their legs and/or backs, including Somali wild asses, grullos, Fjords, Spanish mustangs, and Przwelski’s horses.
Or maybe Mayabel’s owners just brushed her grey baby coat away to reveal her true black coat, and thought they’d have some fun by brushing her in stripes.
Unlike albinism, leucism is caused by a reduction in all types of skin pigment, not just melanin.
"A further difference between albinism and leucism is in eye colour. Due to the lack of melanin production in both the retinal pigmented epithelium (RPE) and iris, albinos typically have red eyes due to the underlying blood vessels showing through. In contrast, most leucistic animals have normally coloured eyes."
Both organizations also agree that this is the first time such an awesomely rare creature has been caught on camera. The photos were taken by the crew of the Spanish Fly, a fishing boat chartered through Maverick Yachts and Sportfishing Charters.