Communication and signaling in birds
Birds produce meaningful communications by their facial expressions, beak movements, feather ruffling, elongating their necks, crouching, bouncing, and flapping their wings. Although each species has its own body language, many different species interpret movements in the same way. For example, various species interpret an upward thrust of the beak as expressing the intention to fly, and the lowering of the breast as a warning of danger. Also, several species perceive raising the tail feathers as a threat, or displaying bright colors atop of the head as a declaration of the intent to attack. Via facial expression, birds can convey a variety of messages to those around them-negative feelings such as dislike and resentment, as well as positive ones like pleasure, enthusiasm and curiosity.24
Birds produce different facial expressions by movements of the beak, or by positioning the feathers above the beak, on the chin, or atop the head. In some species, the feathers above the eye can also move independently. Moreover, many species make a display by opening their beaks. For example, the tawny frogmouth opens its beak to reveal its large, bright green oral cavity, emphasizing the size of its beak and making it appear more intimidating. Some other species open their beaks as a form of threatening behavior, usually silently, but sometimes enhance the performance with hissing or loud breathing.25
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Besides communicating by means of body language, birds produce a great variety of sounds to communicate with other members of their flock, neighbors, or family members. These range from short, simple calls to songs that are surprisingly long and complex. Sometimes birds such as the green woodpecker use different instruments or, like the American woodpecker, use special feathers to produce sound.
Birds also communicate through smell, though since their sense of smell is poor, their communication is based mainly on sound and sight. At times of poor visibility, as at night or in dense foliage, sound is most advantageous, and is also the ideal method for long-distance communication. If conditions are right, birdsong can be heard for up to a few kilometers.
As we have seen in the example of Alex, the African Grey, birds also have conceptualization and communication skills. In certain circumstances, they demonstrate talents equivalent to those of children of primary-school age, learning series of words and other means of human communication through social interaction. When alone, these parrots play vocalization games and when in the company of people, they join vocalizations together to produce new assemblages from existing sequences of speech. God, the Creator of everything on Earth and in the skies, equips them with the talents and characteristics that set them apart. Accordingly, our praises for the supreme beauty of our environment is praise that belongs to God.
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