Seasonal Differences of Onions. 1  Available in yellow, red, and white from March through August. 2  Can be identified by their thin, lighter-colored skin. 3  Typically higher in water content, which reduces their shelf-life and makes them more susceptible to bruising. 4  Range in flavor from sweet to mild.
When a domesticated mare foals, she nurses the foal for at least four to six months before it is weaned, though mares in the wild may allow a foal to nurse for up to a year. The estrous cycle, also known as season or heat of a mare occurs roughly every 19â22 days and occurs from early spring into autumn. As the days shorten, most mares enter an anestrus period during the winter and thus do not cycle in this period.
Some mares may ovulate when the follicle reaches a 35 mm or some may ovulate when the follicle is much larger such as 65 mm. Optimal breeding is every other day while she is in estrus and before she ovulates. A mare will normally ovulate about 24 to 48 hours before the end of estrus.oal Heat. Many breeders will breed their mares during foal heat. Foal heat occurs seven to nine days after foaling and lasts for approximately three to five days. Often, a mare will not display the typical behavioral signs of estrus such as frequent urination or winking of the vulva.