Tiger Lily

Tiger Lily, nicknamed Waterbaby, is one of the oldest mares on Assateague as she was born in September 2002. Her sire was the chestnut tobiano Maryland transfer Cherokee Chief and her dam the bay tobiano Voyager. The late Suzy's Sweetheart was her full sister and my friend Devin owns her full sister from 2000. Her dam was nicknamed Swim Mare because several of Voyager's foals were the first foal ashore and raffled as the Neptune foal. That's why Kelly Lidard nicknamed her Waterbaby when her name was unknown.
Maryland transfers: https://www.thecolorfulchincoteague.com/assateague-horses.html

Tiger Lily is a chestnut which means she has two copies of chestnut or red. Chestnuts require two copies of red in order to be that color because it's recessive. Her sire was chestnut but her dam's pedigree is unknown so we don't know where her bay dam got her copy of chestnut. Tiger Lily passes one copy of red on to all her foals regardless of what color they are.
Chestnut: https://www.thecolorfulchincoteague.com/chestnut.html

She's a tobiano pinto like both of her parents but her foals tell us she inherited one copy of tobiano. Of her 17 foals she's produced three solids. If she had two copies of tobiano then all of her foals would have been tobiano pintos. Statistically her foals get her tobiano 50% of the time. But all of the stallions she's had foals with were also tobiano and their contribution gives the appearance of skewing the statistic.
Tobiano: https://www.thecolorfulchincoteague.com/tobiano.html
The edges of her pinto markings have a roany outline to them. This is called mapping.
Mapping: https://www.thecolorfulchincoteague.com/mapping.html

Waterbaby has some non-mapping roaning to her coat. Tobiano pintos often have roaning to their coat. It's currently thought to be something that tobiano does occasionally and not a separate inheritance.

Not related to color, but I find it interesting that only 4 of Tiger Lily's foals have been fillies. She's produced 13 colts out of 17 foals!