How Do Birds Sing?

Written by Megan Martin
Updated: October 17, 2023
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There are few sounds in nature as pleasant as birds singing. Each bird species has a unique song, with differences in tones and notes depending on the situation. However, how do birds sing? 

Continue reading below to learn not only how birds sing but also why. 

How Do Birds Sing?

Nearly all animals are capable of producing some sort of sound. However, few species can reach the same complexities of sound in the same way that birds are able to. This is because birds have highly specialized anatomy designed for producing a variety of sounds in different ways.

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Much of a bird’s sound originates from the same processes that sound comes from in humans. They inhale oxygen through the bill and bring it into the lungs before exhaling in order to nourish the body with essential oxygen. However, they also use some of this air to aid in sound, just like humans do.

The anatomy is different, though. For humans, sounds come from the larynx, a cavity at the back of the throat that contains vocal cords. Birds don’t have a larynx. Instead, they have what is known as a syrinx. This may also be known as a lower larynx, and rather than being located in the throat, it is situated in the division of the lungs. Each lung can act independently regarding sound, although the range and diversity of sound differs.

Some species can sing not only while exhaling but also inhaling. This allows certain species to sing without end for several minutes at a time.

Common Grackle

Birds have a syrinx instead of a larynx like we do, helping them sing various complex songs.

©Kendall Collett/

The Reason Birds Sing

There are two main reasons that birds sing. The first is to attract a mate. Different birds may have different songs used in courtship. These songs help draw the attention of a mate and establish bonds.

Birds will also sing to defend territories. A bird that is able to carry on a beautiful melody is often one that is strong and healthy. As a result, when their song travels large distances, possible rivals know that the bird harboring that territory can defend itself. 

Two Great Kiskadee

Birds can be highly territorial, and singing helps establish their territories.

©Wirestock Creators/

The photo featured at the top of this post is © Rich Higgins/iStock via Getty Images

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About the Author

Megan is a writer at A-Z Animals where her primary focus is birds, felines, and sharks. She has been researching and writing about animals for four years, and she holds a Bachelor of Arts in English with minors in biology and professional and technical writing from Wingate University, which she earned in 2022. A resident of North Carolina, Megan is an avid birdwatcher that enjoys spending time with her cats and exploring local zoological parks with her husband.

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