@article{oai:iwate-u.repo.nii.ac.jp:00009042,
 author = {西, 千秋 and 只野, 由佳 and 出口, 善隆 and 青井, 俊樹},
 journal = {岩手大学農学部演習林報告},
 month = {Jun},
 note = {We investigated the food habits of Japanese squirrels in Takamatsu Park and its surrounding forest in Morioka City, Iwate Prefecture, northeastern Japan. We observed the squirrel's food habits directly. Squirrels fed on walnuts throughout the study period and various other items by season. These included the berries of Morus bombycis (June, July), the strobilus of red pine (August, September), the sprouts of cherry trees (May), and bark (May, June, July, September, December). We suggest that squirrels feed on walnuts all season but use various types of food depending on season.},
 pages = {73--80},
 title = {盛岡市の都市近郊林に生息するニホンリスの食性},
 volume = {45},
 year = {2014}
}