Download or read book Ecology of Band tailed Pigeons in Oregon written by Robert Leo Jarvis and published by . This book was released on 1992 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecology of Band tailed Pigeons in Oregon written by Robert Leo Jarvis and published by . This book was released on 1992 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nesting and Foraging Ecology of Band tailed Pigeons in Western Oregon Columbia Fasciata written by Jerome Patrick Leonard and published by . This book was released on 1998 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nesting and Foraging Ecology of Band tailed Pigeons in Western Oregon written by Jerome Patrick Leonard and published by . This book was released on 1998 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pacific Coast band-tailed pigeons (Columba fasciata) have declined markedly during the past several decades. Despite implementation of increasingly restrictive hunting regulations, populations have shown minimal signs of recovery. I radio-marked 127 adult band-tailed pigeons in the central Oregon Coast Range in April-May of 1993-95 to document nesting chronology and productivity, and characterize nesting and feeding habitats. One-hundred and thirty-seven nests initiated by 65 different birds were monitored. Multiple brooding was predominant; 45 birds initiated 2-3 nests each with 7 birds producing 3 successful nests each in one nesting season. All nests had a clutch size of 1. The reproductive period started in late-April and went through mid- to late-October. Nesting attempts peaked mid- to late-June, and 21% of all young fledged after September 15. Nest re-use was rare, but 78% of the consecutive nests I observed by individual birds eliminated nesting intervals by overlapping nesting cycles. Nesting overlap averaged 7 days. Nest survival probabilities were consistent between years with a pooled estimate of 0.689 (95% C.I = 0.613-0.775). Band-tails nested in a variety of tree and shrub species, with 70% of the nests observed in Douglas-fir (Pseudotsuga menzesii). Only 17% of all nests were in deciduous trees or shrubs. Nest height was highly variable and averaged 10.3 m. They also used a variety of stand conditions (open and closed) and seral/community types (sapling-pole to old-growth in deciduous and conifer communities). However, the majority of nests (77%) were in stands classified as conifer community with 55% in the closed-canopy, sapling-pole seral condition. Feed areas were diverse in their physical and vegetative characteristics and were located in both riparian and upland zones. The principal food component within most of these sites was either Pacific red elder (Sambucas racemosa) or cascara buckthorn (Rhamnus purshianus). Band-tailed pigeons were highly mobile throughout their nesting season. They traveled an average of 5.02 km to feed areas and had a mean home range size of 11,121 ha. Due to their mobility, and diverse habitat use, band-tailed pigeons would be an important species for consideration in large watershed management designs.
Download or read book Band tailed Pigeon written by Worth Mathewson and published by Timber Press (OR). This book was released on 2005 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: "A longtime hunter in the coastal range of Oregon takes stock of his favorite prey, the band-tailed pigeon," reported "The New York Times in the summer of 2003. What made Worth Mathewson's writing about the western wilderness pigeon newsworthy is not his elegant evocation of the damp, spicy scent of a Pacific Northwest river valley before dawn or his keen observations of bandtails flying high and fast over a canyon, then folding their wings to drop into trees like gray darts. Rather the press took note of an avid hunter blaming overhunting and bad management for the devastation of a species. Wary by nature yet brave under fire, the magnificent bandtail has long thrilled the sportsman. Some attribute the bird's decline to habitat loss, but Mathewson, in this complete natural history, carefully builds his case to the contrary. While trichomoniasis and spraying of broadleaf trees may contribute, the human factor is paramount: a persistently callous attitude toward "Patagioenas fasciata may keep it in a downward spiral. If modest protections are lifted at the first signs of recovery, its fate may be sealed. "Nonhunters will likely be puzzled, perhaps irritated, by statements that some hunters love the quarry they kill," Mathewson writes. "But that is fact." With drawings by noted wildlife artist David Hagerbaumer, color photographs by the author and Margaret Thompson Mathewson, and an extensive bibliography, this finely rendered, affecting portrait of a wild bird with a troubled past is nothing short of a call to action.
Download or read book Habitat Availability Dietary Mineral Supplement and Measuring Abundance of Band tailed Pigeons in Western Oregon written by Todd Alan Sanders and published by . This book was released on 1999 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: My objectives were to: 1) develop a point count technique for estimating relative abundance of band-tailed pigeons (Columbafasciata monilis), 2) determine the availability, distribution, and interspersion of mineral sites, and nesting and foraging cover in relation to abundance of band-tailed pigeons in west-central Oregon, and 3) test the hypothesis that mineral sites are used during the breeding season to supplement dietary calcium, as previous researchers suggested. Point counts of cooing band-tailed pigeons offer an effective means of estimating the abundance of band-tailed pigeons in space and time, and have the potential for use as a range-wide population survey technique. Point counts should: be>800 m apart, begin 10 minutes before official local sunrise, last 1-hour in duration, and in the Oregon Coast Range, be conducted between 16 June and 24 July. Point counts may also be conducted between 25 July and 16 August, but a multiplicative factor of 0.49 must be added to counts to make them comparable to earlier counts. My data indicate that band-tailed pigeon populations within the central Coast Range of Oregon are not limited by availability of potential nesting and foraging cover and mineral sites at landscape scales less than their home range size (about 11,000 ha). Band-tailed pigeons were almost uniformly distributed, except that they were more abundant along the western 1-third of the central Coast Range than along the eastern 1-third. This pattern was correlated with forage distribution. Possibly the availability of red elder (Sambucus racemosa var. arborescens) and cascara (Rhamnus purshiana) imposes a constraint on the Pacific Coast band-tailed pigeon population size within the range of these species. The data I collected do not support the hypothesis that band-tailed pigeons use mineral sites to supplement dietary calcium. Instead, band-tailed pigeons are associated with mineral sites with high sodium concentration. Use of mineral sites coincides with the consumption of red elder and cascara berries during the breeding season; these berries are especially low in sodium, but high in energy, protein, and potassium. I hypothesize that band-tailed pigeons visit mineral sites to supplement dietary sodium when foraging exclusively on red elder and cascara berries.
Download or read book The Ecology and Physiology of the Band tailed Pigeon in British Columbia written by Gordon Lorne March and published by . This book was released on 1969 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Annotated Bibliography of Oregon Bird Literature Published Before 1935 written by George A. Jobanek and published by . This book was released on 1997 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: This exhaustive, richly annotated resource fills an important gap in Oregon bird literature. George Jobanek has carefully searched dozens of early ornithological, scientific, and natural history journals and publications, from American Field to Zoe, for records of Oregon birds. Because of the rarity of many references and their inaccessibility to most readers, the author has provided annotations for each of the nearly two thousand entries. Jobanek conveys in a concise manner the salient points of each article and frequently quotes from the references, especially descriptions of abundance and range. In addition, many of the annotations include citing of recent references.By briefly describing each item, Jobanek reveals its usefulness for contemporary readers. References are organized by author and cross-indexed by species, county, key word, and year of publication. Key words such as behavior, conservation, distribution, migration, nesting, plumage, and taxonomy have been assigned to each entry to reflect the primary topic or theme of the Oregon material of the reference. A gazetteer identifies localities mentioned in the annotations.This bibliography is a valuable new resource for professional and informed amateur ornithologists, wildlife managers, ecologists, natural historians, librarians, and anyone interested in birds in the Pacific Northwest. Its references will offer researchers a base for future studies and allow readers a glimpse of an earlier, golden era in ornithology.
Download or read book Ecological Characterization of the Central and Northern California Coastal Region pt 1 Regional characterization pt 2 Species written by and published by . This book was released on 1981 with total page 690 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Simulation of a Band tailed Pigeon Population in Oregon written by Gary William Hanlon and published by . This book was released on 1980 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Relations Between Habitat Variability and Population Dynamics of Bass in the Huron River Michigan written by Ken D. Bovee and published by . This book was released on 1994 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research Publications in the Technical Report Series of the U S Fish and Wildlife Service and National Biological Survey written by National Biological Survey (U.S.) and published by . This book was released on 1994 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Habitat Suitability Index Model for Brook Trout in Streams of the Southern Blue Ridge Province written by Christopher J. Schmitt and published by . This book was released on 1993 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Results of the Four Corners Cooperative Band tailed Pigeon Investigation written by Clait E. Braun and published by . This book was released on 1975 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Habits Food and Economic Status of the Band tailed Pigeon written by Johnson Andrew Neff and published by . This book was released on 1947 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Model of the Productivity of the Northern Pintail written by John D. Carlson and published by . This book was released on 1993 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Resource Publication written by and published by . This book was released on 1975 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
