Reproduction and survival of Rio Grande turkeys in Oregon
Article Abstract:
Reproductive parameters and survival of 76 females in a population of Rio Grande wild turkeys in southwestern Oregon from Jan 1989 until Dec 1991 were studied to improve understanding of reproduction and survival of these species. No difference was detected between reproductive characteristics of first-net attempts between adults and yearlings, although more frequent renesting was observed among adults. Over the years, there were differences in annual female survival. In contrast, there were no differences in survival between yearling and adult females within years. Brood survival until four weeks was placed at 0.431.
Publication Name: The Journal of Wildlife Management
Subject: Zoology and wildlife conservation
ISSN: 0022-541X
Year: 1999
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Reproduction and survival of Rio Grande turkeys in Oregon
Article Abstract:
Research undertaken in the upper South Umpqua River Basin, Douglas County, OR, into reproduction and survival of Rio Grande turkeys indicates that annual survival rates, although varying from year to year, are generally high. Nesting rates of yearling females are greater than those reported for a native Rio Grande turkey population. Survival of yearlings is greater than levels for a number of eastern wild turkey populations, with no difference between adult and yearling female survival.
Publication Name: The Journal of Wildlife Management
Subject: Zoology and wildlife conservation
ISSN: 0022-541X
Year: 1999
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Relationships between vegetational structure and predation of artificial sage grouse nests
Article Abstract:
Sage grouse populations in Oregon have been declining due mainly to high nest predation. The high nest predation was directly associated with a decline in the number of tall grass cover and medium height shrub cover which are the ideal nesting grounds for sage grouse. Artificial nests with tall grass and shrub cover were introduced into a traditional sage grouse nesting area. The artificial nests significantly increased nesting success rates by lowering the risk of predation.
Publication Name: The Journal of Wildlife Management
Subject: Zoology and wildlife conservation
ISSN: 0022-541X
Year: 1995
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