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Factors Influencing Nesting Success Of Sub Arctic Breeding Canada Geese
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Book Synopsis Factors Influencing Nesting Success of Sub-arctic Breeding Canada Geese by : Stacy K. Gan
Download or read book Factors Influencing Nesting Success of Sub-arctic Breeding Canada Geese written by Stacy K. Gan and published by . This book was released on 2012 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Scott Edward Walter Publisher :Ann Arbor, Mich. : University Microfilms International ISBN 13 : Total Pages :440 pages Book Rating :4.:/5 (89 download)
Book Synopsis Nesting Ecology of Eastern Prairie Population Canada Geese by : Scott Edward Walter
Download or read book Nesting Ecology of Eastern Prairie Population Canada Geese written by Scott Edward Walter and published by Ann Arbor, Mich. : University Microfilms International. This book was released on 1999 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: Successful management of Canada geese (Branta canadensis) requires an understanding of the factors which govern annual variation in reproductive success. We examined variation in nesting phenology, clutch size, nest survival, partial predation, egg size, and nest density for Eastern Prairie Population (EPP) Canada geese using data collected from 3 study areas in northern Manitoba from 1976-1996. The timing of nest initiation varied among years, and this variation was largely related to local weather conditions during the month of May. Mean clutch size declined with later annual nesting phenology, suggesting that delayed nesting results in higher energetic demands and reduced endogenous reserves for EPP geese. The relation between clutch size and relative nest initiation date within years was not linear, with the largest clutches being produced near the midpoint of initiation, and this relation was likely driven by a reduced allotment of nutrient reserves to egg production by early-nes.
Author :Dennis G. Raveling Publisher :[Toronto, Ont.] : Ontario Ministry of Natural Resources ISBN 13 : Total Pages :94 pages Book Rating :4.3/5 (91 download)
Book Synopsis Nesting Ecology of Canada Geese in the Hudson Bay Lowlands of Ontario by : Dennis G. Raveling
Download or read book Nesting Ecology of Canada Geese in the Hudson Bay Lowlands of Ontario written by Dennis G. Raveling and published by [Toronto, Ont.] : Ontario Ministry of Natural Resources. This book was released on 1977 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: Report is in two major sections: nesting ecology and population limitations. Objectives were to examine apparent optimum and accomplished reproductive rates, habitat preferences, and density and sparing of nests in relation to the regulation of population size. The nesting ecology was also examined to provide insight into the factors limiting goose numbers.
Book Synopsis Arctic Ecosystems in Peril by : Bruce D. J. Batt
Download or read book Arctic Ecosystems in Peril written by Bruce D. J. Batt and published by . This book was released on 1997 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Factors Influencing Nutrient Allocation During Egg Formation in Sub-arctic Breeding Geese by : Christopher M. Sharp
Download or read book Factors Influencing Nutrient Allocation During Egg Formation in Sub-arctic Breeding Geese written by Christopher M. Sharp and published by . This book was released on 2010 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nesting Success, Gosling Growth, and Adult Body Condition of Giant Canada Geese (Branta Canadensis Maxima) in Southern Illinois by : Michael R. Sertle
Download or read book Nesting Success, Gosling Growth, and Adult Body Condition of Giant Canada Geese (Branta Canadensis Maxima) in Southern Illinois written by Michael R. Sertle and published by . This book was released on 2006 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding factors that influence reproductive success is important for managing waterfowl populations. Current breeding density of giant Canada geese ( Branta canadensis maxima ) in the northern 2/3 of Illinois is three times greater than that of the southern 1/3 of Illinois. Previous research indicates that goose population abundance is most likely influenced by mortality of adults, nest success, and gosling growth. In this study, I examined the aspects of fecundity that are most likely to affect giant Canada goose reproduction in southern Illinois: clutch size, nest success, and gosling growth. The average clutch size was 5.0 eggs/nest, and the average nest success was estimated to be 60%. Adult male geese in northern and central Illinois tended to be in better body condition than males in southern Illinois. There was, however, no difference in adult body condition of females between northern, central, and southern Illinois.
Book Synopsis Factors Affecting Nesting Success in the Blue Goose by : John Michael Harvey
Download or read book Factors Affecting Nesting Success in the Blue Goose written by John Michael Harvey and published by . This book was released on 1970 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Aspects of Canada Goose Nesting Ecology in Northern Manitoba by : Scott Edward Walter
Download or read book Aspects of Canada Goose Nesting Ecology in Northern Manitoba written by Scott Edward Walter and published by . This book was released on 1996 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Factors Influencing Nest Survival of Cackling Geese by : F. B. Baldwin
Download or read book Factors Influencing Nest Survival of Cackling Geese written by F. B. Baldwin and published by . This book was released on 2006 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt: Birds respond to predation pressures during the nesting period by adopting behavioral tactics that reduce the probability of nest loss. These responses depend on extrinsic ecological factors and intrinsic constraints specific to the organism. Individuals of species that are incapable of deterring or repelling an attack on their own may learn to associate with colonial-nesting or aggressive heterospecifics, and thereby increase their chance of breeding successfully. Much avian research has evaluated consequences of nesting decisions in relation to physical habitat features; however, the role of heterospecifics in reproduction and subsequent nest site selection has received far less attention despite the prevalence of mixed-species nesting associations. I used robust estimates of nest survival to make inferences about the impacts of ecological factors (i.e., timing of nesting, macrohabitat use) on reproductive success of cackling geese, including the role played in this process by colonial-nesting lesser snow and Ross's geese (collectively, light geese). I then assessed whether habitat use patterns of breeding cackling geese (i.e., nest densities in colonial and non-colonial areas) reflected the conditions wherein nesting was adaptive, and in doing so, I evaluated whether cackling geese associate with colonial-nesting light geese for protection. I predicted cackling geese would enjoy higher nest survival rates inside the colony, and would therefore preferentially nest in areas occupied by nesting light geese.
Book Synopsis Factors Associated with Dusky Canada Goose Nesting and Nest Success on Artificial Nest Islands of the Western Copper River Delta by : Nicole Marie Maggiulli
Download or read book Factors Associated with Dusky Canada Goose Nesting and Nest Success on Artificial Nest Islands of the Western Copper River Delta written by Nicole Marie Maggiulli and published by . This book was released on 2008 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: The population of dusky Canada geese (Branta canadensis occidentalis; hereafter, dusky geese) nesting on the western Copper River Delta (CRD) in south- central Alaska has been in decline since the late 1970s. In an effort to alleviate mammalian predation, increase nest success, and avoid a listing under the U.S. Endangered Species Act, an artificial nest island (island) program was implemented on the western CRD in 1983. The installation of new islands on the CRD is the sole management action of the Pacific Flyway Council on the breeding grounds, but no comprehensive evaluation of the program has been published. I examined general trends in island use and nest success over time for three island types (donut islands, fiberglass floater islands, and sandbag islands) from 1984-2005. I used data from the island program to identify factors associated with dusky Canada goose nesting (hereafter, use) and nest success on islands from 1996-2005. I generated a series of candidate models and used logistic regression with model selection techniques to determine how variables representing pond characteristics, vegetative characteristics, interactions with conspecifics and larid species, the previous year's island status, and the distance to predator corridors were associated with island use and nest success for each year. Use of islands by dusky geese nesting on the western CRD increased between 1987 and 2005 from a low of 10% in 1987 to 44% in 2005. There was annual variability in factors associated with island use; however, use of islands was most consistently and strongly associated with the previous year's island status. The odds of a nest being placed on an island that contained a successful nest the previous year were 2.91 to 6.62 times greater than for islands not used the previous year. There was also evidence for an increased likelihood of island use further from shore and for islands with up to 55% aerial shrub cover and shrubs up to 1 m tall. Nest success was consistently high, indicating islands have long term potential for increasing dusky goose nest success on the Copper River Delta. Compared to island use, my analysis of nest success and habitat features resulted in many more competitive models (average 10 v. 2 per year) with fewer strong (95% confidence intervals for parameter estimates excluded zero) associations between explanatory variables and nest success. Explanatory variables representing vegetative characteristics, interactions with conspecifics and larid species, and the distance to predator corridors had a relatively low capacity to explain nest success on artificial islands. However, there was some evidence for an increased likelihood of nest success on islands further from shore with shorter shrubs. Lower variability in factors associated with island use is likely because factors associated with nest site selection are controlled by decisions of the nesting goose. The importance of previous year's island status on island use likely reflects high site fidelity by breeding adult geese, with fidelity being higher for birds that have successful nests. Alternately, dusky geese use cues from the previous year's nesting activity when prospecting for island nest sites. In contrast, nest success is dependent on a more complex combination of factors that vary within and among years outside the control of a nesting goose. Inter-annual variation in the timing and magnitude of eulachon (Thaleichthys pacificus) spawning runs on large sloughs of the CRD and prey-switching by important dusky goose nest predators may have considerable influence on dusky goose nest success on islands, similar to mainland- nesting dusky geese. The inability to control for eulachon presence and abundance may have confounded my analysis of habitat features important to nest success. Therefore, factors such as presence of alternate prey (and predator abundance) may be more important to dusky goose nest success on islands than habitat features. Current use of available nest islands is at a program high of 44% and nest success also remains high (63%); suggesting the artificial nest island program is valuable for dusky geese. However, the contribution of island-nesting dusky geese to the dusky goose population on the Copper River Delta is unclear. There is a need for a population model that incorporates all recent information on dusky goose reproductive ecology to determine if artificial nest islands can increase dusky goose population size, and if so, how many islands are needed.
Book Synopsis Brood Mixing Behavior and Population Dynamics of Canada Geese at Dowling Lake, Alberta by : Glasgow, William Mitchell
Download or read book Brood Mixing Behavior and Population Dynamics of Canada Geese at Dowling Lake, Alberta written by Glasgow, William Mitchell and published by c1977.. This book was released on 1977 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: The breeding biology and population dynamics of Canada geese nesting at Dowling Lake, Alberta were studied during 1971-1975. The purpose of the research was to examine the factors affecting survival in this population, especially during the brood rearing period. Breeding pairs did not appear to compete for snow-free locations on the breeding islands in early spring. Territories established during this period decreased in size with the encroachment of later nesting pairs. Nest and territory spacing approached uniformity, but behavioral differences and heterogeneity of the vegetation prevented realization of a statistically significant uniform pattern. Artificial nesting platforms were constructed to increase the nesting density of Canada geese on the large breeding island. Thirty-five, 39, 20, and 39 percent of the available platforms were used as nest sites in 1971-1974, respectively. Platform nesting success was no different than that of ground nesting geese and there was no signific.
Book Synopsis Movements and Nest Success of Canada Geese in Northern Manitoba by : Barry William Allen
Download or read book Movements and Nest Success of Canada Geese in Northern Manitoba written by Barry William Allen and published by . This book was released on 1996 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Influence of Territorial Behavior on Nesting Success in a Population of Canada Geese by : Ernest Ewaschuk
Download or read book The Influence of Territorial Behavior on Nesting Success in a Population of Canada Geese written by Ernest Ewaschuk and published by . This book was released on 1970 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A study of the relationship between density and territorial behavior during the period of incubation of nesting Canada geese (Branta canadensis ssp.) was conducted on a 16-acre island in Dowling Lake, Alberta. Densities of nesting geese were recorded as 8.0, 10.7, and 9.2 nests per acre for 1967 through 1969 respectively. Nesting success (hatching at least one egg varied from 60 to 27 to 69 percent for the three respective years. Coyote predation, responsible for 50 percent of nest loss in 1968, was related to low water levels. Rates of desertion remained constant over the three years at 18, 21, and 22 percent respectively. Small sizes of territories, high densities of nesting pairs, large numbers of nesting pairs, and the presence of non-territorial geese resulted in a relatively constant level of antogonism throughout incubation. Pairs that were successful in hatching all or part of their clutches always won more interactions with neighboring pairs and with non-territorial geese. Mo.
Book Synopsis The North American Geese by : Paul Johnsgard
Download or read book The North American Geese written by Paul Johnsgard and published by Lulu.com. This book was released on 2016-08-23 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt: The eight currently recognized species of North American geese are part of a familiar group of birds collectively called waterfowl, all of which are smaller than swans and generally larger than ducks. They include the most popular of our aquatic gamebirds, with several million shot each year by sport hunters. Our two most abundant waterfowl, the Canada goose and snow goose, have populations collectively totaling about 15 million individuals. Like swans, the lifelong pairbonding of geese, their familial care, and prolonged social attachment to their offspring are legendary. Their seasonal migratory flights sometimes span thousands of miles, and the sight of their long, wavering flight formations are as much the symbols of seasonal change as are the spring songs of cardinals or the appearance of autumnal leaf colors. This book describes each species' geographic range and subspecies, its identification traits, weights and measurements, and criteria for its age and sex determination. Ecological and behavioral information includes each species' breeding and wintering habitats, its foods and foraging behavior, its local and long distance movements, and its relationships with other species. Reproductive information includes each species' age of maturity, pair-bond pattern, pair-forming behaviors, usual clutch sizes and incubation periods, brooding behavior, and postbreeding behavior. Mortality sources and rates of egg, young, and adult losses are also summarized, and each species' past and current North American populations are estimated. In addition to a text of nearly 60,000 words, the book includes 8 maps, 21 line drawings, and 28 photographs by the author, as well as more than 700 literature citations.
Book Synopsis Influence of Territorial Behaviour on Nesting Success in a Popula Tion of Canada Geese by : E. Ewaschuk
Download or read book Influence of Territorial Behaviour on Nesting Success in a Popula Tion of Canada Geese written by E. Ewaschuk and published by . This book was released on 1969 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nesting Giant Canada Geese of Southeastern Lower Michigan by : Richard Marvin Kaminski
Download or read book Nesting Giant Canada Geese of Southeastern Lower Michigan written by Richard Marvin Kaminski and published by . This book was released on 1975 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: Giant Canada geese (Branta canadensis maxima) are year-around residents in the Huron River Valley of southeastern Lower Michigan. The flock originated from maxima stock that were either released or escaped from private waterfowl collections during the mid-1920's. A study was made during the spring and summer of 1974 to determine the flock's breeding range, to quantitatively describe the nesting habitat, to estimate the size of the breeding population, its productivity, and survival of goslings to fledging.
Book Synopsis Towards Conservation of the Diversity of Canada Geese (Branta Canadensis) by : Canadian Wildlife Service
Download or read book Towards Conservation of the Diversity of Canada Geese (Branta Canadensis) written by Canadian Wildlife Service and published by . This book was released on 2000 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a compilation of papers on the ecology of the Canada goose populations, beginning with a paper on the diversity of this species and the status of its different populations in North America. The remaining papers concern populations breeding in the Arctic, subarctic & boreal regions, and temperate regions. Topics covered include population status, distribution, survival, behaviour, surveys, breeding & nesting ecology, monitoring, and management.