Abundance and Sighting Frequency of Birds in Sendi – Gajah Mungkur Track, Taman Hutan Raya Raden Soerjo, Mojokerto Regency

Sendi – Gajah Mungkur is one of conservation area in Taman Hutan Raya Raden Soerjo, Mojokerto Regency. This is region mostly composed by tropical rainforest with altitude of 1067 – 1174 amsl with rich biodiversity including orchids, mammals, and birds. Some evidence concerning Taman Hutan Raya Raden Soerjo's richness are some reports and documentations about the Zoothera andromedae, Ficedula narcis, and Arborophila javanica as new records in West Java. This research is done to determine the abundance and sighting frequency of birds in Sendi – Gajah Mungkur track, Taman Hutan Raya Raden Soerjo, Mojokerto Regency using modified line transect method. Species with the most abundance and sighting frequency are Collocalia linchi, Zosterops palpebrosus, and Dicaeum sanguinolentum