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.
Usually by the end of April mares will have regular heat cycles which last until about October. The estrus (heat) cycle during the spring and summer lasts and average of 21 days. That is during each 21 day period one egg is ovulated.For an average of 5 days during that period the mare is receptive to stallions. This referred to as in or showing heat.he estrus (heat) cycle during the spring and summer lasts and average of 21 days. That is during each 21 day period one egg is ovulated.