This video is called Wild Amazon Part 1.
From National Geographic:
Dendropsophus ozzyi males make high-pitched, batlike calls
November 8, 2014
Holy Batfrog! Scientists have discovered a new tree frog species with a shrill, batlike call in the Brazilian Amazon.
“As soon as I heard its call, I knew it was a new species. I had never heard anything like it,” said Pedro Peloso, one of the frog’s discoverers and a postdoctoral fellow at Museu Paraense Emílio Goeldi, Brazil.
Peloso and colleagues found the 0.75-inch (19.4-millimeter) amphibian in 2009 as part of a biodiversity survey of Floresta Nacional de Pau-Rosa, a protected area in the state of Amazonas (map).
During the month-long expedition, the team found 21 specimens of the brown-and-orange creature, which has mysteriously long, delicate fingers and toes. (Read about tree frogs in National Geographic magazine.)
The male frogs also have an unusually large vocal sac, a nearly transparent piece of skin that inflates to produce its unique high-pitched chirping sound. Male tree frogs in general make loud calls to communicate with females in distant treetops, but the new species is the first known to sound like a bat.
At a concert in 1981, Osbourne bit the head off a bat that a fan threw on the stage, although Osbourne later said he believed it was rubber. Peloso named his bat frog Dendropsophus ozzyi, and it’s described November 6 in the journal Zootaxa.