Yakety sacs: laryngeal air sac usage in great apes
Siamang | Smithsonian's National Zoo
International Primate Protection League - The siamang is the largest gibbon species. Siamang calls are super-loud due to their inflatable throat sacs. (c) RudiErnst | Facebook
Pouches, pockets and sacs in the heads, necks and chests of baleen whales — Tetrapod Zoology
air sac Archives - Chimpanzee Sanctuary Northwest
Happy International Primate Day! - Sacramento Zoo
Acoustic analysis of primate air sacs and their effect on vocalization: The Journal of the Acoustical Society of America: Vol 126, No 6
File:PrimateAirSacs Schematic.png - Wikimedia Commons
Yakety sacs: laryngeal air sac usage in great apes
Morphology - Orang Utan Republik Foundation
Small Apes | Little Rock Zoo
Primate Animals | Sioux Falls, SD | Great Plains Zoo
How quirk of primate evolution gave humans the voice apes lack | Evolution | The Guardian
Happy International Primate Day! - Sacramento Zoo
MR images of the laryngeal air sac for the same female chimpanzee... | Download Scientific Diagram
Siamang | Smithsonian's National Zoo
Siamang (Symphalangus syndactylus) | about animals
A "singing swinging" lesser ape: the Siamang
Siamangs have large gular sac (throat pouch) that can be inflated to the size of its head, allowing it to make loud, resonating calls or songs : r/Awwducational
Siamang - Wikipedia
Happy International Primate Day! - Sacramento Zoo
A "singing swinging" lesser ape: the Siamang
Los Angeles Zoo - Siamangs are often mistaken for monkeys, but they actually considered smaller-bodied apes. Siamangs are famous for their loud, lilting calls that can be heard more than two miles
