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Page 4174, results 104326 - 104350

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Comparison of neotropical migrant landbird populations wintering in tropical forest, isolated forest fragments, and agricultural habitats
C.S. Robbins, B.A. Dowell, D.K. Dawson, J.A. Colon, R. Estrada, A. Sutton, R. Sutton, Dieter Weyer
John M. Hagan III, David W. Johnston, editor(s)
1992, Book chapter, Ecology and Conservation of Neotropical Migrant Landbirds
Neotropical migrant bird populations were sampled at 76 sites in seven countries by using mist nets and point counts during a six-winter study. Populations in major agricultural habitats were compared with those in extensive forest and isolated forest fragments. Certain Neotropical migrants, such as the Northern Parula, American Redstart, and...
Behavior of sandhill cranes harnessed with different satellite transmitters
Glenn H. Olsen, D. H. Ellis, S.E. Landfried, L.H. Miller, S.S. Klugman, M.R. Fuller, C.H. Vermillion
1992, Book chapter, Proceedings of the Sixth North American Crane Workshop
The effectiveness of various attachment methods and designs of platform transmitting terminals (PTT's) was tested on captive sandhill cranes (Grus canadensis) at the Patuxent Wildlife Research Center, Laurel, Maryland, during 1989-91. Combinations of attachment and transmitter designs included neoprene cord harness with batteries separate from the transmitter (2 harness designs),...
The study of relatedness and genetic diversity in cranes
G.F. Gee, H.C. Dessauer, J. Longmire, W.E. Briles, R.C. Simon
Don A. Wood, editor(s)
1992, Book chapter, Proceedings of the 1988 North American Crane Workshop
The U.S. Fish and Wildlife Service (Service) is responsible for recovery of endangered species in the wild and, when necessary, maintenance in captivity. These programs provide an immediate measure of insurance against extinction. A prerequisite inherent in all of these programs is the preservation of enough genetic diversity to maintain...
Population recovery of the Whooping Crane with emphasis on reintroduction efforts: Past and future
D. H. Ellis, J. C. Lewis, G.F. Gee, D.G. Smith
1992, Book chapter, Proceedings of the Sixth North American Crane Workshop.
The U.S. Fish and Wildlife Service (USFWS) began building a captive whooping crane (Grus americana) colony at Patuxent Wildlife Research Center (Patuxent), Maryland, in 1966. From 1976 to 1984, 73 eggs from this colony and 216 eggs from Wood Buffalo National Park (Wood Buffalo), Canada, nests were placed in sandhill...
A stochastic population model of mid-continental mallards
Rolf R. Koford, J.R. Sauer, Douglas H. Johnson, J.D. Nichols, M.D. Samuel
D.R. McCullough, R.H. Barrett, editor(s)
1992, Book chapter, Wildlife 2001: Populations
We developed a simulation model that integrates infonnation on factors affecting the population dynamics of mallards in the mid-continental region of the United States. In the model we vary age, body mass, and reproductive and molt status of simulated females. Females use several types of nesting and foraging habitat in...
Population dynamics of breeding waterfowl
Douglas H. Johnson, J.D. Nichols, M.D. Schwartz
Bruce D.J. Batt, Alan D. Afton, Michael G. Anderson, C. Davison Ankney, Douglas H. Johnson, John A. Kadlec, Gary L. Krapu, editor(s)
1992, Book chapter, Ecology and Management of Breeding Waterfowl
Progress in satellite tracking cranes
D. H. Ellis, D.G. Smith, Glenn H. Olsen, M.R. Fuller, S.E. Landfried, H. Higuchi, C.H. Vermillion
1992, Book chapter, Proceedings of the Sixth North American Crane Workshop
We review the history of tracking cranes with satellite telemetry and identify some of the difficulties in designing satellite transmitters and harnesses for cranes. Miniaturization of these transmitters and a plethora of harnessing experiments since 1989 allow us to recommend limited application of this technology to all species of cranes....
Foreword
H.M. Reeves, J.D. Nichols
1992, Fish and Wildlife Research 11
A reanalysis of effects on reproduction
Stanley N. Wiemeyer
Michael Gilbertson, editor(s)
1992, Book chapter, Proceedings of the Third Expert Consultation Meeting on Bald Eagles in the Great Lakes Basin. Great Lakes Science Advisory Board Ecological Committee's Biological Effects Subcommittee Report to the International Joint Commission. Windsor, Ontario, Canada. 25 pp.
Karyotype and identification of sex in two endangered crane species
C. Goodpasture, G. Seluja, G. Gee
Don A. Wood, editor(s)
1992, Book chapter, Proceedings of the 1988 North American Crane Workshop
A laboratory procedure for sex identification of monomorphic birds was developed using modern cytological methods of detecting chromosome abnormalities in human amniotic fluid samples. A pin feather is taken from a pre-fledging bird for tissue culture and karyotype analysis. Through this method, the sex was identified and the karyotype described...
Population models for passerine birds: structure, parameterization, and analysis
B.R. Noon, J.R. Sauer
D.R. McCullough, R.H. Barrett, editor(s)
1992, Book chapter, Wildlife 2001: Populations.
Population models have great potential as management tools, as they use infonnation about the life history of a species to summarize estimates of fecundity and survival into a description of population change. Models provide a framework for projecting future populations, determining the effects of management decisions on future population dynamics,...
Effects of extended photoperiod on sandhill crane reproduction
G.F. Gee, G.W. Pendleton
Don A. Wood, editor(s)
1992, Book chapter, Proceedings of the 1988 North American Crane Workshop
Photoperiod studies were conducted with greater sandhill cranes (Grus canadensis tabida) from 1969 to 1972 and from 1982 to 1987 at the Patuxent Wildlife Research Center, Maryland. When housed indoors and exposed to long photoperiods, males produced semen during winter. When exposed to artificially extended photoperiods during spring...