The soldier ants moves from one habitat to another convenient one either in search of food for the future (i.e the raining season)or in search of a better colony for their settlement.The ants are generally regarded as wise insects because they understand time and make good use of it.![IMG_20180806_102604_5.jpg
This is one of the numerous soldiers and it protects the others from external attack.
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From @yusluv09