@Article{taiwania2007521100,
AUTHOR = {Wen-Loung Lin, Yin Wang and Hui-Yun Tseng},
TITLE = {Initial Investigation on the Diet of Eastern Grass Owl (Tyto longimembris) in Southern Taiwan},
JOURNAL = {Taiwania},
VOLUME = {52},
YEAR = {2007},
ISSUE = {1},
PAGES = {100-105},
URL = {https://taiwania.ntu.edu.tw/abstract/570},
ABSTRACT = {This investigation, undertaken in the two regions of Nanshi and Yujing in Tainan County
over the period of 2001 to 2003, included three nests belonging to the Eastern Grass Owl (Tyto longimembris). From these, we collected a total of 157 owl pellets. Analysis and examination of the pellets revealed 329 prey items. More in-depth investigation determined that 95.1% of the Eastern Grass Owl pellets collected consisted of mammal remains, while the remaining 4.9% were made up of bird remains. Of the various types of mammals consumed, rats made up the highest proportion, with a total of 285 rats, accounting for 86.6%. This was followed by 27 shrews and moles, accounting for 8.2%. Hares and birds were seldom caught and consumed. The findings suggested that rats are the main food source of the Eastern Grass Owl, with the Spinus Country-rat (Rattus losea) comprising the majority with 136 counted (41.3%), followed by the Formosan Mouse (Mus caroli) with 96 counted (29.2%). Regarding
biomass, the reversion method was used to calculate that owls at the three nests consumed approximately 22,987 grams of mammal and 480 grams of bird, accounting for 98.0% and 2.0%, respectively. The biomass consumed for each pellet was approximately 149.5 g.},
DOI = {10.6165/tai.2007.52(1).100}
}