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Bullsnakes and Their Control on a Nebraska Wildlife Refuge
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Bullsnakes and Their Control on a Nebraska Wildlife Refuge

著者： Ralph H Imler
版本/格式： 文章 文章 : 英语
刊登在：The Journal of Wildlife Management, Oct., 1945, vol. 9, no. 4, p. 265-273
数据库：JSTOR
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文件类型： 文章
所有的著者/提供者： Ralph H Imler
ISSN:0022-541X
OCLC号码： 479803063
语言注释： English
注意： Plate 12. A. Side view of live trap for snakes with funnel entrance at either end and door (opened) at top for removing trapped animals. B. Seven bullsnakes trapped in early spring; lengths and estimated ages were: 53 inches, 6.5 years; 42 inches, 3.5 years; 33 and 28 inches, 1.5 years; 19, 18, and 17 inches, respectively, young of the preceding autumn. C. A lake in the Nebraska sandhills.
Plate 13. A, B. Snake traps as set with drift fences radiating from lake shore. C. Bullsnake eating an egg in nest of redhead duck. D. Removing trapped bullsnake from trap with snake tongs. E. Stomach contents of a large bullsnake: 2 adult and 7 young meadow mice, tail of pocket gopher, and a young ruddy duck. F. Remains of eggs taken from stomach of 60-inch bullsnake, 5 of gadwall and 7 of avocet.
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