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2. Syrinx (bird anatomy) - Wikipedia

   en.wikipedia.org/wiki/Syrinx_(bird_anatomy)

   Syrinx (serial 5) seen just below the crop. The syrinx (from the Greek word "σύριγξ" for pan pipes) is the vocal organ of birds. Located at the base of a bird's trachea, it produces sounds without the vocal folds of mammals. [1] The sound is produced by vibrations of some or all of the membrana tympaniformis (the walls of the syrinx) and ...

3. Lateralization of bird song - Wikipedia

   en.wikipedia.org/wiki/Lateralization_of_bird_song

   Lateralization of bird song. Passerine birds produce song through the vocal organ, the syrinx, which is composed of bilaterally symmetric halves located where the trachea separates into the two bronchi. Using endoscopic techniques, it has been observed that song is produced by air passing between a set of medial and lateral labia on each side ...

4. Bird anatomy - Wikipedia

   en.wikipedia.org/wiki/Bird_anatomy

   Vocal Bird anatomy: Birds produce sounds through the air that passes through the Syrinx, which is shown close up in the bottom right. In order for birds to produce sound, they use an organ located above the lungs called the syrinx , which is composed of tracheal rings, syringeal muscles, Tympaniform membrane, and internal bony structures that ...

5. Bird vocalization - Wikipedia

   en.wikipedia.org/wiki/Bird_vocalization

   The syrinx and sometimes a surrounding air sac resonate to sound waves that are made by membranes past which the bird forces air. The bird controls the pitch by changing the tension on the membranes and controls both pitch and volume by changing the force of exhalation.

6. Bare-throated bellbird - Wikipedia

   en.wikipedia.org/wiki/Bare-throated_bellbird

   P. nudicollis. Binomial name. Procnias nudicollis. (Vieillot, 1817) The bare-throated bellbird (Procnias nudicollis) is a species of bird in the family Cotingidae. It is found in moist subtropical and tropical forests in Argentina, Brazil, and Paraguay. The male has white plumage and bristly bluish-black bare skin around its eye, beak and throat.

7. Parrot - Wikipedia

   en.wikipedia.org/wiki/Parrot

   The syrinx (vocal organ) of parrots, which aids in their ability to produce song, is located at the base of the trachea and consists of two complex syringeal muscles that allow for the production of sound vibrations, and a pair of lateral tympaniform membranes that control sound frequency. [97]