Spring begins

The sun heats the snow more and more mass and make it loose and granular. Roads are deposited, dark, covered with bumps, potholes and puddles. On the southern slopes of the hills, the snow is melting quickly, and there before all beginning to blacken the first spring thaw holes. Almost at the same time there and the first migratory birds - the rooks. Return of the rooks, of course, is not necessary every year for the same number. But the average time of their arrival for the Moscow region - around March 18-19. The average start date of the positive snowmelt - March 16, the appearance of thaw holes-around March 18. It would be right to consider for the beginning of spring, when winter landscape gives way to early spring. And this is for the middle of the forest belt and will match the appearance of thawed patches in open areas. Almost immediately after it begins arriving birds and the awakening of some overwintering insects. We divide the spring into three periods: 1. Early Spring, from occurrence of thaw holes until the snow on the fields. 2. The average period of spring - from the snow up to the full flowering of cherry, the average onset of flowering period coincides with the average date of last frost and should be directly over the deployment of oak leaves and lime. In the Moscow region it falls approximately mid-May. 3. The third and last period (late spring) - from flowering cherry to the flowering apple trees. This term almost coincides with flowering red clover in the meadows. On average, in the Moscow region this comes at the beginning of June.