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Articles 691 - 703 of 703
Full-Text Articles in Population Biology
Muscongus Bay, Marine Wildlife Inventory And Evaluation, Alan E. Hutchinson, Sandra J. Lovett
Muscongus Bay, Marine Wildlife Inventory And Evaluation, Alan E. Hutchinson, Sandra J. Lovett
Maine Collection
Muscongus Bay, Marine Wildlife Inventory and Evaluation
by Alan E. Hutchinson and Sandra J. Lovett
Maine Department of Inland Fisheries and Wildlife
Augusta, Maine, February, 1984.
Contents: Preface / Acknowledgment / List of Tables / List of Figures / Introduction / Resource Inventory / Resource Evaluation / Resource Impact Assessment / Conclusions and Recommendations / References / Appendix
Keeping Starlings Out Of W.A, John L. Long
Keeping Starlings Out Of W.A, John L. Long
Journal of the Department of Agriculture, Western Australia, Series 4
In Europe and North America huge flocks of starlings cause millions of dollars worth of damage to grain and fruit crops each year and large sums of money are spent trying to control them.
Starlings were introduced into australia in the late 1890s when more than 200 birds were released near Melbourne. They are now well established over much of eastern Australia, ranging from central Queensland, south to Tasmania and along the Great Australian Bight to the South Australian-Western Australian border, occasionally crossing it and sometimes moving as far west as the Esperance region on the south coast.
Some people …
The Red-Tailed Hawk On Sauvie Island, Oregon, Kevin J. Lien
The Red-Tailed Hawk On Sauvie Island, Oregon, Kevin J. Lien
Dissertations and Theses
A study was undertaken to determine the abundance, distribution, perching heights, diets and territory sizes of Red-Tailed Hawks on Sauvie Island, Oregon. Sauvie Island supported a large wintering population of non-territorial Red-Tailed Hawks. The establishment of territories began around 10 January. Average perch height was found to be 14.2 m. Average perch height increased from fall to spring, corresponding-to the onset of the breeding season and to the onset of egg-laying and incubation. Voles (Microtus spp.) were the principal prey year-round, though waterfowl were more important in terms of biomass in the winter and early spring. Territory sizes on the …
Status Of The Red-Cockaded Woodpecker At The Felsenthal National Wildlife Refuge In Arkansas, Douglas A. James, Fred L. Burnside Jr.
Status Of The Red-Cockaded Woodpecker At The Felsenthal National Wildlife Refuge In Arkansas, Douglas A. James, Fred L. Burnside Jr.
Journal of the Arkansas Academy of Science
The Red-cockaded Woodpecker is an endangered species that is endemic to mature pine forests of the southeastern United States. In Arkansas it presently occurs only in pinelands of the Ouachita Province and Gulf Coastal Plain. Cavity trees for nesting and roosting must be mature pines diseased with red-heart fungus. Due to recent forestry practices mature pine stands are disappearing thus reducing numbers of needed cavity trees. The Felsenthal National Wildlife Refuge in southeastern Arkansas contains high densities of Red-cockaded Woodpeckers and because of favorable management priorities there the survival of the woodpecker seems assured. Populations of the species in other …
Seasonal Abundance And Habitat Distribution Of Birds In Northeastern Arkansas, Earl L. Hanebrink, Alan F. Posey
Seasonal Abundance And Habitat Distribution Of Birds In Northeastern Arkansas, Earl L. Hanebrink, Alan F. Posey
Journal of the Arkansas Academy of Science
Bird sighting records from 1964 through 1978 for 17 northeastern Arkansas counties were compiled according to the seasonal status, relative abundance and habitat distribution of each species. The five seasonal occurrence categories and their relative species composition were: transient visitant (46.6%), summer resident (20.3%), winter resident (14.8%), permanent resident (17.2%) and winter visitant (1.0%). The seven seasonal abundance categories and their relative species composition were: very rare (13.9%), rare 15.9%), uncommon (30.7%), fairly common (10.5%), common (25.6%), very common (1.7%) and abundant (1.7%). Eleven habitat categories were included: campestrian, abandoned fields, forest edge, lowland woods, upland woods, riparian woods, marshes, …
The Bobwhite Quail, Norm Dey, Jack Sinn
The Bobwhite Quail, Norm Dey, Jack Sinn
Nebraska Game and Parks Commission: Publications
A Year with the Bobwhite
Population Dynamics—Managing the Variables
The Way to Quail Abundance
The Ring-Necked Pheasant In Nebraska, William L. Baxter, Carl W. Wolfe
The Ring-Necked Pheasant In Nebraska, William L. Baxter, Carl W. Wolfe
Nebraska Game and Parks Commission: Publications
Ringneck—Its Past and Prospects: A most successful exotic, pheasant numbers are declining
Nuptial Rites and Nesting: Spring recoups winter’s losses
Summer Broods: While cocks undergo their annual moult, hens enter the brooding period; for eight weeks, hens attend chicks
Hunting the Ring-necked Pheasant
Season of Testing: Nebraska’s winters test a pheasant’s mettle, but given good cover and an adequate food supply, the ringneck is almost impervious to the elements
Methods of Management
Life History And Ecology Of The Ring-Necked Pheasant In Nebraska, William L. Baxter, Carl W. Wolfe
Life History And Ecology Of The Ring-Necked Pheasant In Nebraska, William L. Baxter, Carl W. Wolfe
Nebraska Game and Parks Commission: Publications
Table of Contents
The Study … 6
Population Studies … 8 ...
Methods … 8 ...
Results and Discussion … 9
Nesting Studies … 13 ...
Methods … 13 ...
Results and Discussion … 14 ...
Nest Parasitism … 16 ...
Effects of Nest Searching on Nest Fate ... 17 ...
Nesting Chronology ... 18 ...
Roadside Nests ... 21 ...
Nesting in Experimental Alfalfa ... 22 ...
Pheasant Production in Wetlands ... 23
Brood Studies … 26 ...
Methods ... 26 ...
Sampling Problems ... 26 ...
Results and Discussion ... 27
Cover Utilization by Pheasant Broods ... 29 …
The Breeding Biology Of The Western Tanager (Piranga Ludoviciana), Gary G. Benson
The Breeding Biology Of The Western Tanager (Piranga Ludoviciana), Gary G. Benson
All Master's Theses
In 1969 a two-year study was undertaken in an effort to enlarge our knowledge of the life history of the western tanager (Piranga ludoviciana). Bent (1958) summarizes the literature on the western tanager, and a review of his work clearly shows an almost total absence of detailed information on the species' life history. To obtain this information, observations were conducted from 1 May through 29 July 1969. A few observations were made during the 1968 breeding season.
Studies On The Avifauna Of Burgner Acres, An Upland Stream-Side, Ash-Elm Forest And Its Edge, Kerry Lee Bryan
Studies On The Avifauna Of Burgner Acres, An Upland Stream-Side, Ash-Elm Forest And Its Edge, Kerry Lee Bryan
Masters Theses
No abstract provided.
The Breeding Population Of Waterfowl On The Chippewa National Forest, John Mathiesen
The Breeding Population Of Waterfowl On The Chippewa National Forest, John Mathiesen
United States Department of Agriculture, Forest Service / University of Nebraska-Lincoln: Faculty Publications
The purpose of this paper is to describe the characteristics of the breeding waterfowl population on the Chippewa National Forest in north central Minnesota.
The Sparrow Invasion Of 1962, C D. Gooding, C. R. Walton
The Sparrow Invasion Of 1962, C D. Gooding, C. R. Walton
Journal of the Department of Agriculture, Western Australia, Series 4
During late 1962 and early 1963, a report that sparrows were at large in the metropolitan area close to Perth drew intense public interest.
This article gives some facts about the reported sightings.
Life Histories Of North American Nuthatches, Wrens, Thrashers And Their Allies: Order Passeriformes, Arthur Cleveland Bent
Life Histories Of North American Nuthatches, Wrens, Thrashers And Their Allies: Order Passeriformes, Arthur Cleveland Bent
Papers in Ornithology
An attempt has been made to give as full a life history as possible of the best-known subspecies of each species and to avoid duplication by writing briefly of the others and giving only the characters of the subspecies, its range, and any -habits peculiar to it. In many cases certain habits, probably common to the species as a whole, have been recorded for only one subspecies. Such habits are mentioned under the subspecies on which the observations were made. The distribution gives the range of the species as a whole, with only rough outlines of the ranges of the …