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Croaks Of The Bornean Frog introduces students and specialist readers to the various aspects and calls of Hylarana frogs in Sarawak. Of the 10 available Hylarana species in Sarawak, this book and CD contains the calls of 6 species – H. baramica, H. glandulosa, H. luctosa, H. nicobarensis, H. picturata and H. signata.
Croaks Of The Bornean Frog is divided into 4 main chapters covering Introduction, Croaking ability of frogs, Species account, and Conservation issues. The introduction covers the defi nition of frogs and the various habitats that they are located in, accompanied with relevant habitat photographs. The chapter on how frogs croak depicts dissected throat regions to reveal the mechanism behind the sound production. The species account provides colour photographs of the various species encountered. This is followed by the advertisement call signatures depicted by sonograms and oscillograms.