The Brazilian Atlantic Rainforest is filled with the ear-piercing ‘screams’ of a tiny amphibian in distress, but until now, we humans have been oblivious to their cries.
For the first time, researchers have recorded South American frogs crying out at a frequency that totally bypasses the human ear – but which would be quite unpleasant to animals with the right kind of receivers.
The leaf litter frog (Haddadus binotatus) is the most abundant species of frog in the forest community. Though abundant, they’re tiny – the largest of the species are females, and even they that barely reach 64 millimeters (2.5 inches) in length.
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