2.6K views · 100 reactions | Take a moment to sing-a-long with Max and Hitam the siamangs! Typically first thing in the morning, adult female siamangs will start their territorial hooting, and this noisy song can last 30 minutes. Paired males and females will sing duets to one another, and each pair creates a unique song all their own! | Riverbanks Zoo and Garden | Facebook

6.9K views · 191 reactions |  Zoo visitors may *hear* our siamangs,...

22K views · 172 reactions | Siamangs are the largest of all Gibbon species distinguished with what is technically known as a 'Gular Sac' or 'Throat Pouch'. While not necessarily the loudest primate on earth, our family unit can at times be heard throughout the entire zoo. This is our lovely Cian enjoying a tomato snack   Keeper Liv | National Zoo & Aquarium Canberra | Facebook