Urich's Litter Frog (Pristimantis urichi) is a small ground dwelling frog found only in Trinidad and Tobago. This species was very common in the forested areas of the Northern Highlands when I was there. Each night we heard them calling from the forest and occasionally we would find an individual hopping on the ground or climbing on low leaves.
Like other related small "tink" frogs in the genera Pristimantis and Diaspora, this species appears to call from leaves of low shrubs within the forest at night. This is how we usually found them. In spite of standing near hundreds of individuals over several nights, we were never able to see one calling. Their short high pitched calls are very difficult to pinpoint to a source!
The call of this species is similar to many small Litter Frogs in the genus Pristimantis. It is a sharp, metallic, whistled pip sound. It carries quite well in the forest and is hard to pinpoint because it is such a short call.
The metallic pip has a carrier (dominant) frequency of about 3160Hz.
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© Chris Harrison 2018
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