Abstract
The release of a rehabilitated raptor, defined as an effort to release the raptor back into nature, have been done in Indonesia; however, only about 2% were monitored for more than one year. This is because long time intensive monitoring using simple observation equipment is difficult to do because of limited resources. Thus, more modern equipment – oneof which is satellite radio used in this research – needs to be used. The use of satellite radio to monitor the movement of rehabilitated raptors was carried out for the first time in 2018 for juvenile male Javan hawk-eagles (N.bartelsi) and adult female Changeable hawk-eagles (N.cirrhatus). The results of the monitoring of these two types of raptors showed that they mostly used forested areas close to water sources. Both types of eagles had the farthest flight distance with an average distance of ± 1,000 m / day occurring at week 4. Thus, it can be concluded that the rehabilitation efforts for these eagles were successful and that they had adapted to their new habitats as wild raptors.
Highlights
The release of rehabilitated raptors has been carried out extensively in Indonesia, but according to [4] only about 2% are monitored for a period of more than 1 year
The satellite radio in Indonesia was first used in the release of a rehabilitated juvenile male Javan hawkeagle released in the Cagar Alam (Nature Reserve) area of Mount Sigogor (East Java) and an adult female changeable hawk-eagle released in the Taman Hutan Raya (Tahura) Bunder area (Yogyakarta) in 2017
The Javan hawkeagle is endemic to Java Island, and the changeable hawk-eagle is scattered in the same island. Both types of eagles can sometimes be found in the same habitats; it is interesting to see and compare the data from the satellite radio installed on these two types of raptors
Summary
The release of rehabilitated raptors has been carried out extensively in Indonesia, but according to [4] only about 2% are monitored for a period of more than 1 year. The satellite radio in Indonesia was first used in the release of a rehabilitated juvenile male Javan hawkeagle (about 2 years old) released in the Cagar Alam (Nature Reserve) area of Mount Sigogor (East Java) and an adult female changeable hawk-eagle released in the Tahura Bunder area (Yogyakarta) in 2017. The Javan hawkeagle is endemic to Java Island, and the changeable hawk-eagle is scattered in the same island Both types of eagles can sometimes be found in the same habitats; it is interesting to see and compare the data from the satellite radio installed on these two types of raptors
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