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  1. Comparison of nicarbazin absorption in chickens, mallards, and Canada geese

    Contributor(s):: C. A. Yoder, L. A. Miller, K. S. Bynum

    Nicarbazin (NCZ), a coccidiostat commonly used in the poultry industry, causes reduced hatchability and egg quality in layer hens at a concentration of 125 ppm (8.4 mg/kg) in the feed. Although this effect is undesirable in the poultry industry, NCZ could provide a useful wildlife contraception...

  2. Avian perching deterrents on ultrasonic sensors at airport wind-shear alert systems

    Contributor(s):: Michael L. Avery, Ann C. Genchi

    Preventing birds from perching on the sensor units of the Federal Aviation Administration’s Low Level Wind-shear Alert System (LLWAS) is crucial to its successful operation. In this study we evaluated, under controlled conditions, responses of brownheaded cowbirds (Molothrus ater), fish crows...

  3. Avian Use of Suburban Greenways as Stopover Habitat

    Contributor(s):: Salina M. Kohut

    The decline of Neotropical migrant songbirds has called attention to the need for habitat conservation along the entire migratory route, and scientists now recognize the need to conserve stopover habitat in addition to habitat on the breeding and wintering grounds. Greenways are a popular means...

  4. Avian vacuolar myelinopathy: a newly recognized fatal neurological disease of eagles, waterfowl and other birds

    Contributor(s):: John R. Fischer, Lynn A. Lewis, Tom Augspurger, Tonie E. Rocke

    Since 1994, wildlife biologists and wildlife health specialists have worked to determine the cause of avian vacuolar myelinopathy (AVM), a neurologic disease of bald eagles (Haliaeetus leucocephalus) and other birds. The causes of morbidity and mortality in wildlife typically are determined...

  5. Back from the Brink: Sarah Stock at TEDxYosemite

    Contributor(s):: Sarah Stock

    We live at a time when the rate of extinction is thought to be 1,000 times higher than normal. In this hopeful talk, Sarah Stock describes how the dire fate of two animals in Yosemite was reversed, showing what is possible when we boldly address past mistakes.Sarah Stock is a Wildlife Biologist...

  6. Behaviour of laying hens negotiating perches at different heights

    Contributor(s):: Lambe, N. R., Scott, G. B., Hitchcock, D.

    Four sets of 3 horizontal perches were positioned with respective gradients of 0 degrees , 30 degrees , 45 degrees or 60 degrees . Four groups of 15 ISA Brown laying hens were individually exposed to each treatment, being placed on the uppermost perch (Perch 1) with a food reward available at the...

  7. Bringing the Endangered Barn Owl Back to McLean County, Illinois: Implementing a Local Nest Box Program

    Contributor(s):: Anna Groves

    Barn owls are an endangered species in Illinois, but populations have been known to increase where nest box programs have been implemented. In conjunction with the John Wesley Powell Audubon Society, a barn owl nest box program was established in McLean County and the surrounding area. Seventeen...

  8. Coordinated spring survey of mid-continent sandhill cranes

    The aerial transect portion of the coordinated spring survey of mid-continent sandhill cranes was conducted on 23 March in Nebraska's Platte and North Platte River valleys. The 2005 photo corrected aerial estimate was 491,900 birds. Outside the traditional aerial transect portion, observers...

  9. Developing a strategy of predator control for the protection of the California least tern: a case history

    Contributor(s):: Peter H. Butchko, Maynard A. Small

    In recent years, predation has been determined to be a seriously limiting factor in the reproduction of the endangered California least tern (Sterna antillarum browni) at many of its nesting colonies. Among them is a major colony at Camp Pendleton Marine Corps Base near Oceanside, CA. Early...

  10. Development of perching behaviour in chicks reared in enriched environment

    Contributor(s):: Heikkila, M., Wichman, A., Gunnarsson, S., Valros, A.

    Behaviour problems, such as feather pecking and cannibalism, in loose housing systems for laying hens may originate from the rearing period. Early access to perches facilitates the use of three-dimensional space and therefore allows escape from threatening pen mates. In this experiment, we...

  11. Dietary comparisons of adult male Common Grackles, Red-winged Blackbirds, and Yellowheaded Blackbirds in north central North Dakota

    Contributor(s):: H. Jeffrey Homan, George M. Linz, William J. Bleier, Robert B. Carlson

    We compared the esophageal contents of adult male common grackles (Quiscalus quiscula), red-winged blackbirds (Agelaius phoeniceus),and yellow-headed blackbirds (Xanthocephalus xanthocephalus) collected in north central North Dakota from JUly through October 1989. Temporal variation in the diets...

  12. Distribution, abundance and habitat use of American white pelicans in the Delta Region of Mississippi and along the western Gulf of Mexico coast

    Contributor(s):: D. Tommy King, Thomas C. Michot

    Aerial surveys of American White Pelicans (Pelecanus erythrorhynchos) were conducted over coastal Louisiana and the delta region of Mississippi on 1-2 days during December, February, and April each year from 1997 to 1999. Additional surveys were conducted in coastal Texas and Mexico during...

  13. Effects of grackle damage control techniques in citrus on nesting success of non-target species

    Contributor(s):: John H. Rappole, Wan R. Tipton, Arlo H. Kane, Rafael H. Flores

    Several techniques were tested to reduce the damage caused by great-tailed grackles to citrus in the lower Rio Grande Valley of southern Texas: monofilament line, eyespot balloons, pyrotechnics, and grackle nest removal. Ten species were found nesting in the treated groves, but only the mourning...

  14. Emergency Animal Management during Disasters

    Contributor(s):: Angela I. Dement

    Natural disasters such as hurricanes and wildfires continue to demonstrate how important it is to have local emergency and disaster management plans. Yet often, the need to care for livestock and family pets during emergencies is overlooked. The Texas Animal Health Commission (TAHC) wrote an...

  15. Encounter with the Others

    Full-text: Available

    Contributor(s):: Alessandra Bacci

    AbstractThe project Poke Ma Regole aims at raising and practicing civil coexistence and conviviality in the city we live in, starting from the relationship between the other animals and us. The project takes place in primary and secondary schools of Florence, Italy. This article addresses the...

  16. Encounters with Difference and Politics of Place: Meanings of Birdwatchers and Dog Walkers at a Multiple-Use Urban Forest

    Contributor(s):: Taryn M. Graham

    With a particular interest in birdwatchers and dog walkers, this case study explored place meanings of users at Westmount Summit Woods, a multiple-use urban forest located just west of downtown Montreal, Quebec, Canada. A document analysis was conducted on the research site, followed by data...

  17. Epidemiology of Emerging Zoonoses in Israel

    Contributor(s):: Arnon Shimshony

    The epizootiologic, climatic, and ecologic conditions in the Middle East, combined with socioeconomic and agricultural structures in Israel, have created a unique and hazardous veterinary public health situation in this country. In this paper, emerging zoonotic diseases are newly introduced...

  18. Estimation of red-winged blackbird mortality from toxic bait application

    Contributor(s):: James F. Glahn, Michael L. Avery

    Application of slow-acting toxic bait is one method of reducing local populations of depredating blackbirds. Estimating numbers of birds killed in such baiting operations is difficult because affected birds die off-site and are seldom recovered. We conducted bioassays and flight pen studies of...

  19. Evaluation of moderate and low-powered lasers for dispersing double-crested cormorants from their night roosts

    Contributor(s):: James F. Glahn, Greg Ellis, Paul Fioranelli, Brian S. Dorr

    The double-crested cormorant (Phalacrocorax auritus) is the primary avian predator on the southern catfish industry, estimated to cause $5 million in damage per year. To date, the most effective strategy for alleviating cormorant depredations in areas of intensive catfish production is...

  20. Farm & Home Science Vol. 3 No. 3, September 1942

    Even though chickens are efficient in converting raw farm product into human food, every locality has some poultry flocks with low production from which little or no profit is obtained. This is because the owner in most instances fails to recognize and give careful attention to all the factors...