Conservation reserve program: source or sink habitat for grassland birds in Missouri?
Article Abstract:
The Conservation Reserve Program (CRP) has benefitted many declining populations of grassland birds, but few studies have proved that CRP plantings aid population growth. A new study investigates the theory that CRP fields are source habitats for seven species of grassland birds in Missouri. Fecundity is estimated and compared to fecundity rates thought to be required to maintain stable populations. The study finds little evidence that CRP contributes to populations of species, such as the dicksissel or the red-winged blackbird, but has probably contributed to the conservation of grasshopper sparrows, eastern meadowlarks and field sparrows.
Publication Name: The Journal of Wildlife Management
Subject: Zoology and wildlife conservation
ISSN: 0022-541X
Year: 1999
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Reproductive strategies, success, and mating systems of northern bobwhite in Missouri
Article Abstract:
A study has been conducted to describe the reproductive behavior of the northern bobwhite, Colinus virginianus, by measuring the reproductive success, clutches and male-incubated nests of 321 radio-marked birds. Female bobwhites exhibited monogamy during 60% of the mating period and were polygamous during the remaining 40%. Females that were successful in their first nesting attempt attempted second nests. Nest survival was high for all nests located. These results confirmed that bobwhites exhibit multiclutch and ambisexual polygamous mating systems.
Publication Name: The Journal of Wildlife Management
Subject: Zoology and wildlife conservation
ISSN: 0022-541X
Year: 1995
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Survival and cause-specific mortality of northern bobwhite in Missouri
Article Abstract:
The seasonal survival, annual survival and cause-specific mortality of bobwhites were investigated. Some 1,001 bobwhites in northern Missouri were radio-monitored to evaluate the influence of incubation, brood-rearing, age and sex on their survival. The results, which indicated a lower survival rate for females during spring and fall, revealed avian and mammalian predators to be the primary natural threat to the survival.
Publication Name: The Journal of Wildlife Management
Subject: Zoology and wildlife conservation
ISSN: 0022-541X
Year: 1995
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