could be, but then mine have been like that when in heat, as well. She does look like she's progressing though. As Diane said, elongating and "shopping" (for milk). It's always interesting to see the changes in a "new" mare here on the MareStare forum!
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As to color - I've never done well with the color percentages. I like actually "looking" at what color the foal will be.
The stallion looks like this - E?, aa (no bay gene), nn (no creme gene) and don't know what he's got to make a white diamond.
The mare looks like this - E?, A?, nCr.
Do you know what color her other foal was? Do you know what color foals the stallion has sired? That tells a lot, even w/o color testing...
Just based on what the letters above are (stallion's letter first) -
EE, aA, nn - bay
E?, aA, nCr - buckskin
Then there are a lot of "IFs"... IF either parent has produced a chestnut foal, then you know that that parent carries an "e" in the black/red department. Two "e"s on a resulting foal will be chestnut. If your mare has an "a" for the other bay gene, she can produce non-bay foals - including a smokey black (no bay but does have her creme gene). If the other bay gene is "A" - she will always produce bays or chestnuts/palominos/cremellos carrying bay. The percentage calculator actually does it's percentages with those "unaccounted for" genes "in play".
Color is a lot of fun. I've played with it a lot. I don't know anything about the appaloosa markings in minis (our Shetlands don't have the "appy" genes) and more is being discovered daily about both other colors (most recent test available is DUN) and about the paint/pinto markings (several new discoveries there in the last several years).
IF your mare's coloring isn't produced by the cream gene, but is instead Dun, then the whole color scheme is different and I would need to go study how that works since I don't really know yet (Other than she's not a buckskin and neither would the foal be)...
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It's nice to follow another mare to her safe foaling! Thanks for sharing.