Nice throat sac on the siamang! I love the photos of the gorgeous primate exhibits at the Singapore Zoo, and the enclosures are a thousand times better than any outdated cages that still pop up around the world. The orangs and siamangs in Singapore definitely have large areas in which to roam, and it is great for humans to see such spacious, naturalistic habitats in a zoo.
The Siamang pair were in the midst of their late morning serenade. Easily one of the most unique of animal calls, i absolutely love it.
To be fair to other zoos, especially those in temperate zones, it is really easy for jungle to grow here since we're right smack on the equator with 90% humidity on a daily basis
