The presence of these behaviours is most likely due to the fact that these behaviours helped birds to survive in the past.
Bird are the warm blooded vertebrates that has feathers, toothless beaked jaws and has the ability to reproduce their young ones through the laying of eggs.
They take care of their young ones till a certain life stage to ensure their survival.
Therefore, the presence of these behaviours is most likely due to the fact that these behaviours helped birds to survive in the past.
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