Tatayo's Glass Frog (Hyalinobatrachium tatayoi) is a small Centrolenid Frog that lives in the tropical lowland forests from southernmost Costa Rica, down through Panama and into NW Venezuela, and western Colombia and Ecuador.
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| range map from iNaturalist.org |
The call of the Tatayo's Glass Frog is best described as a single sharp whistled "peep" repeated every five seconds or so. Like other Hyalinobatrachium, the call is high pitched with a carrier frequency of around 4.6-4.8 kHz.
Call of Tatayo's Glass Frog from Anton Valley, Panama
We usually found the calling, sitting upright on a broad leaf overhanging a stream, sometimes quite high over the stream. At close range the call is very piercing and I found it hard to record them because they overpowered (clipped) my microphones in spite of using 32bit float recorder. (In hindsight, I should have backed off a bit - DOH!)
The spectrogram of this call shows a short, percussive upward whistled call at around 4.7 kHz. Looking at the shape of the call on this spectrogram, you can see the upward slur to the whistle and you might be able to hear that if you listen carefully.
But if you slow the call down and lower the pitch somewhat, you can hear the structure of the call a bit better. To me, it sounds like the frog is whistling "b-reee". But at normal speed, this is harder to hear. Here's the slowed down version -
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© Chris Harrison 2024
iNaturalist. https://www.inaturalist.org/. Accessed August 24, 2024
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