1966 年 17 巻 1 号 p. 1-21
Over 5 years surveys on the food habits of 'Habu', poisonous snake, in nature in the Amami Islands were carried out since September of 1959 and the results were summarized as follows : 1. 927 cases were examined and these animals as food of Habu in nature belong in 43 species, 38 genera and 27 families of whole classes of Vertebrata, i. e. 85.9% of them belonged in Mammal, 6.6% of birds, 4.9% of Reptile, 2.5% of Amphibia and 0.2% of Pisces. 2. 17 species of animals were newly found as the food of Habu. 3. House rats and water rats occupied of 82.5% of whole cases examined and the author believes that the house rat is very important one as the food of Habu. 4. Main food of young snake was cold-blooded animals as Reptile and that of adult was warm-blooded animals, especially house-rats. 5. Rats occupy majority of food all year round but the rate of bird becomes higher in autumn. 6. Territory of Habu varies in wide range from field to around residence area and Habu likes house rats so much that residence area must be dangerous zone of chance of Habu attack. 7. Nocturnal activity of Habu and its activity of climbing tree and invasion to residence were proved by its food habits. 8. Sizes of food vary by size of snake and sometimes its takes same size of food as its own body length. 9. Foods are swallowed from head and also digested from there. 10. New knowledges on taxonomy and ecology of food animals were obtained from these series of surveys.