A communication barrier of birds!!

Noise pollution not only hampers human beings, wild animals but also it make birds life difficult. It affects their behavior  around the world.  A study was conducted by the researchers from the George Mason University, USA, recently studied  the song patterns of the Eastern wood pewee, a small flycatcher bird.

They found when noise level increases due to traffic, the bird alters the length and frequency of its song to improve communication.

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