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Spring migration and its history

March 15, 2009
Observer Today

As we approach the end of the winter season, we excitedly wait for the start of the spring migration season to commence. This particular migratory season is normally accompanied by the appearance of many plant and animal species we do not normally observe throughout the wintertime of the year. In addition to the new birds at our feeders, we start to look for new plant growth such as buds and shoots to become visible in our yards. We anxiously await the appearance of new behaviors in both mammal and bird species including the appearance of early insect activity. The American robin, long considered the traditional spring arrival indicator, though some scientists believe the red-winged blackbird might just be replacing it in this category, appears in flocks that are moving back north from the south where they have been feasting on available food sources of berries and earthworms during the wintertime. Occasionally we may observe over winter members of this group of birds, which has become more expected in recent years as opposed to years ago. After this first wave we begin to observe the resident robins appearing a little later.



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