vocal sac उदाहरण वाक्य

Male with two subgular vocal sacs, conspicuous externally by folds of the skin on the sides of the throat; these regions generally blackish.
This model was painted to look like the real thing and was equipped with a rubber vocal sac that could be inflated on cue.
Since they also lack vocal sacs, they make clicks ( brief pulses of sound ) underwater ( again similar to " Pipa pipa " ).
During February and March, the male emits a high clear trill by distending a vocal sac on its throat, in hopes of attracting a mate.
The males of the two species of this family will scoop recently hatched tadpoles into their mouth, where they will move into the vocal sac.

Then he measured vibrations in the walls of the vocal sacs and other tissues of several frog sepecies in response to a range of sound frequencies.
As reported in The Proceedings of the National Academy of Sciences, real frogs approached the speakers when calls were made but the vocal sac was not inflated.
Scientists have long assumed that the vocal sacs in all frogs and toads _ pouches opening into their mouths _ act as resonators to amplify their croaks.
Unaffected by onlookers, the males began the process by puffing out their paper-thin vocal sac, which vibrates, emitting the trill, similar to the sound of a fax emission.
Males have vocal cords and make a range of croaks, particularly in the breeding season, and in some species they also have vocal sacs to amplify the sound.