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.
The estrous cycle in most mares starts to normalize in late April or early May until August-the normal breeding season for horses. During this time, the mare will have an estrous cycle of 21 days (Â±3 days). The estrous cycle is composed of two phases: the estrous phase (in heat) and the diestrous phase (out of heat).Estrus usually lasts for 6 days, but can be 4-10 days, depending on the mare.Diestrus is normally 15 days, but may vary from 12-18 days.he estrous cycle is composed of two phases: the estrous phase (in heat) and the diestrous phase (out of heat). Estrus usually lasts for 6 days, but can be 4-10 days, depending on the mare. Diestrus is normally 15 days, but may vary from 12-18 days.