Physical Sciences and Mathematics Commons^™

Bird Control Methods And Devices--Comments Of The National Pest Control Association, Philip J. Spear

Bird Control Seminars Proceedings

It may be useful to review some of the considerations that go into recommendations concerning bird management. Later I will make some comments concerning specific methods and devices being used in or promoted for bird control work regardless of whether or not they are new. Members of the National Pest Control Association provide a variety of services, such as fumigation, termite control and general pest control which includes rodent control. There are eight such categories listed in our roster, but only one member in five provides every service listed. Bird control is a rather recent development and is the newest …

Good Practice In Bird Management, James W. Steckel

Bird Control Seminars Proceedings

I'm going to deviate a little bit from what's been said. I'd like to read to you first of all a Good Practice Statement for Bird Management that was accepted by the National Pest Control Association in the past year, 1965. I think it's important for all the people here, realizing that some of you are suppliers, some of you are from regulatory agencies, some of you are in the bird management business, and others are in¬terested in this field in many other ways. It's important for us to realize, all of us, that this field is just in the …

Agricultural Bird Problems In The West, Donald Balser

Bird Control Seminars Proceedings

First, I'd like to qualify geographically, the area where most of our work is done and problems occur. It is primarily in the Rocky Mountain states and the west coast. While the area of the Denver Wildlife Research Center's responsibility covers the states west of the Mississippi River; the only area on the plains where our personnel have conducted intensive studies outside of Colorado is in South Dakota. The major bird problems in grain crops in the west are primarily caused by blackbirds excepting, of course, waterfowl depredations. It's difficult to rank the principal crops according to seriousness of losses. …

Control Of Birds In Aircraft Hangars, Richard N. Smith

Bird Control Seminars Proceedings

What I am going to say this afternoon about bird control in hang¬ars won't take but a few minutes, mainly because I think this is one area that we already have partial solutions. By this I mean that in most instances, at least where I've worked, we've been able to solve most of the hangar bird problems. Some of you have probably worked on similar problems or have worked in airplane hangars and after the session I'll certainly welcome any comments you may have. What I have to say will relate mainly to what I've done myself, or the men …

Side Effects Of Persistent Toxicants, George J. Wallace

Bird Control Seminars Proceedings

As you can see from the general tenor of the printed program for this seminar, I am in the unenviable position of trying to discourage you from certain types of chemical control; but my assigned topic "Side Effects of Persistent Toxicants," implies that mission. However, my remarks may be somewhat anticlimax at this time, because it is now generally conceded that we need to reevaluate certain chemicals in control work and to restrict or severely curtail use of those that per¬sist for long periods in the environment. So let me detail my reasons for a somewhat negative attitude toward the …

Agricultural Bird Problems In The Midwest And East, Maurice L. Giltz

Bird Control Seminars Proceedings

We recognized this bird damage problem from an agricultural standpoint around 1950. It seemingly was growing and when we looked into it; it later appeared that this was the case. The problem was quickly resolved to be primarily red-winged blackbirds in corn. We also have problems of damage to fruit crops such as apples, or peaches by starling and other birds, in grapes probably by warblers and most certainly star¬lings in certain seasons. But, this isn't as consistent and persistent at the corn damage by red-winged blackbirds. We began about 8 years ago to make a survey and we got …

Histoplasmosis--Its Relationship To Birds, E. R. Price Ph.D.

Bird Control Seminars Proceedings

Histoplasmosis is a disease affecting man and many other ani¬mals including the dog, cat, cow, horse, and several wild animals. It is caused by a pathogenic fungus known as Histoplasma capsulatum. This fungus lives and multiplies in the ground as a mold. It prefers the undisturbed litter in and around old chicken houses or in undis¬turbed droppings under bird roosts. It has been found in the soil of dog kennels, under porches of old houses, under trees and bushes frequented by birds in the daytime. It has also been found in isolated caves and hollow trees. It apparently is capable …

Chemosterilants, Possible Control Agents, Robert Mclean

Bird Control Seminars Proceedings

A chemosterilant may be defined as a chemical compound that reduces or destroys fertility of the treated animal. There are a variety of compounds which have an anti-fertility effect, and these com¬pounds may attack the reproductive process at any one of its many phases. Chemosterilants have a good potential as a means of population control of pest animals, because the population may be reduced with little reproductive compensation which normally follows a reduction caused by killing. The number of young produced would be reduced by preventing reproduction or by causing early mortality; therefore, there would be little compensatory increase in …

Control Of Birds In The Airport Environment, C. E. Faulkner

Bird Control Seminars Proceedings

We now move from the inside of the hangar to the outside and view the problem of birds on runways and taxiways. The increased use of aircraft for transportation and the increased use of jet aircraft to take care of this transportation will, of course, compound our bird problems at major airports. To lesson this probability of the bird-aircraft strike, bird management plans should be initiated at these var¬ious commercial airports so we can lessen the bird problem. To show you some of the mechanics involved in a bird management plan, I'm going to take you to a typical airport …

Blackbird Flock Behavior In Corn, A Theoretical Model (With Session Discussion), M. I. Dyer

Bird Control Seminars Proceedings

I realized this past winter that redwings form the base for an international problem, and so I went down to see Jim Caslick in Florida. Unfortunately, I picked the wrong season. I misjudged the weather for when I went down in May to get experimental birds it was pretty hot. Next year I'll be a bit more careful and go down during the winter time. I want to discuss something a bit different but still in line with crop damage by red-winged blackbirds. I want to relate the damage assessment that we're making in agricultural corn to bird behavior. We've …

Frontmatter & Opening Remarks, 3rd Bird Control Seminar, William B. Jackson

Bird Control Seminars Proceedings

Bowling Green State University, Bowling Green, Ohio, September 13-15, 1966.
Sponsored by the Department of Biology, Bowling Green State University, with the assistance of Division of Wildlife Services, United States Fish and Wildlife Service, and the National Pest Control Association, Elizabeth, New Jersey.
Dr. William B. Jackson, Conference Chairman; David E. Schneider, Conference Assistant; David E. Schneider and William B. Jackson, Editors.

Metropolitan And Industrial Bird Problems: Panel Discussion, Harold Coleman, Anthony Clay, Kilmer Bortz

Bird Control Seminars Proceedings

As a pest control industry, we are interested in bird control, especially in areas of residence, commercial buildings, food plants, mills and elevators, commercial feed lots, farms, and even area wide controls in some of our cities. We run into all kinds of problems; I suppose you men do, too.

Ecological Control Of Bird Hazard To Aircraft, V. E. F. Solman

Bird Control Seminars Proceedings

The Canadian Wildlife Service has had twenty-five years experience with the problem caused by bird contacts with aircraft. I experienced my first bird strike, while flying as an observer on a waterfowl survey in August, 1940. Officers of the Service investigated bird problems at airports at Yarmouth, Nova Scotia, and Cartierville, Quebec, in the late 1940's. Those incidents involving gulls and low speed piston-engined aircraft caused minor damage to the aircraft but considerable disturbance to the operators. As aircraft speeds increased and airports became more numerous and busier the problem increased in extent and complexity. By 1960 it was apparent …

Population Dynamics Of Pest Birds, Robert Mclean

Bird Control Seminars Proceedings

We want to talk now about population principles; this is our main problem dealing with populations. We should discuss the general application of population principles and the management of bird populations. The reason we can discuss this is because many species follow established principles; population growth and later regulation of its size follow certain basic rules. Many pest species follow these principles, but not always to the letter. Populations of different species, as well as of a species, vary depending upon local conditions. Local environments dictate what population levels and the growth of populations will be. Minor variabilities still fit …

Agricultural Bird Problems In The Southeast, James Caslick

Bird Control Seminars Proceedings

Our chairman has wisely asked that we not spend all of our time here telling each other about our bird problems. In the Southeast, our difficulties with blackbirds are based upon the same bird habits that cause trouble elsewhere: they flock, they roost and they eat, generally taking advantage of the readily available handouts that today's agricul¬tural practices provide. Those of us on the receiving end of these de¬predations of course think that damage in our own particular area must be far the worst, anywhere. Because of the location of our meeting place today, perhaps it is worthwhile to point …

Table Of Contents -- Proceedings Third Bird Control Seminar

Bird Control Seminars Proceedings

No abstract provided.

Mineralized Springs In Utah And Their Effect On Manageable Water Supplies, James H. Milligan, Ray E. Marsell, Jay M. Bagley

Reports

Need and Importance of Study

Water demands in Utah are continuously increasing. It is essential that these demands be me to insure the continued enhancement of the social and economic well-being of all sectors of our society. Since water needs must be met from a relatively fixed water supply it is imperative that supplies be managed for complete utilization in such a way that all legitimate requirement scan be satisfied.

As our available water supplies are used more completely by making a given supply satisfy more than one use, water quality problems become more pronounced. The multiplicity of uses to …

Deer And The Ainsworth Canal, Karl E. Menzel

Nebraska Game and Parks Commission: White Papers, Conference Presentations, and Manuscripts

Merritt Dam and the Ainsworth Canal were constructed by the Bureau of Reclamation to provide irrigation water for the vicinity of Ainsworth in north central Nebraska. The reservoir was completed in 1964 and at capacity has an area of 2,906 surface acres. The canal commences at the Dam, 27 miles southwest of Valentine, and extends eastward for 52.8 miles to Highway 20 east of Johnstown. The canal, along with 174 miles of laterals and 63 miles of drains, serves to irrigate about 34,000 acres of farmland.

The Ainsworth Canal is lined with concrete along its entire length. In the western …

Development, Verification, And Use Of Methods To Model Chemical And Thermal Processes Lakes Mead And Powell, Bureau Of Reclamation

Publications (WR)

PURPOSE

The purpose of the proposed research is to quantify the effects that Lakes Mead and Powell have on the salinity in the Colorado River system, and to evaluate changes that cap be made to the operating system of the reservoirs (within legal/institutional constraints) to enhance salt precipitation and/or minimize evaporation within the reservoirs. The effect of any changes (i.e., selective withdrawal uses, pumped storage, etc.) on reservoir evaporation could also be evaluated with a goal of minimizing evaporation. This will be accomplished through the development of a mathematical model of the reservoirs as described below.

BACKGROUND

Two major problems …

Handbook Of Nebraska Trees: A Guide To The Native And Most Important Introduced Species (Revised 1951), Raymond J. Pool

School of Natural Resources: Faculty Publications

Nebraska is not to be classified as a forested state since less than 3 per cent of the area of the state is covered by natural timber. However our native forest trees are numerous as to different kinds and their distribution in the state is characterized by many interesting facts. The every-day life of our people is not so commonly associated with trees as is that of peoples in the more wooded states where lumbering and the wood-working industries are very important occupations because of the proximity of great forests of coniferous or broadleaved trees. The people of Nebraska use …

Man And His Water Resource, Dean F. Peterson

Faculty Honor Lectures

Several preceding honor lectures have dealt with water. The title of a recent one, "Water and Man," by Dr. Sterling Taylor closely resembles the one for this paper. Dr. Taylor's paper dealt primarily with the physical science of water. This one will consider the nature of the use of water by man and the technological and institutional structure related to that use. Thus there should be no serious overlap. My friends in the social sciences may be surprised, too, to find that somehow this lecture has spilled over into their territory. But engineering is the implementation of science and technology. …

Stage-Fall-Discharge Relations For Flood Flows Over Highway Embankments, Gaylord V. Skogerboe, M. Leon Hyatt, Lloyd H. Austin

Reports

At Utah State University, considerable effort has been devoted to the analysis of submerged flow at open channel constrictions. A method of analyzing submerged flow was first developed for a trapezoidal flume by Hyatt (1965). Later studies verified the method of analysis for a rectangular flume (Skogerboe, Walker, and Robinson, 1965) and Parshall flumes (Skogerboe, Hyatt, England, and Johnson, 1965). Because of the previous findings, it was felt this method of analyzing submerged flow could be applied to highway embankments.

A highway embankment is a form of broad-crested weir when overtopped by flood waters. Being a weir, the flood discharge …

Ua3/3/1 Comments On Activities At The Western Kentucky State College Farm, Dallas Wheat

WKU Archives Records

Report on how the WKU Farm was used in courses on agricultural engineering and soil and water conservation.

Modifications To Gate-Flume Structures On The Weber Davis Canal, Gaylord V. Skogerboe, M. Leon Hyatt

Reports

The turnout structures under study divert flows from the Weber-Davis Canal near Clearfield, Utah. A portion of the canal in this area was realigned as a result of the construction of the Interstate Highway System. The twin turnout structures, used to divert water to the West Branch Irrigation Company and West Layton Irrigation Company, were constructed in conjunction with the realignment of the concrete -lined canal.

A three-dimensional drawing of the twin turnout structures is shown in Fig. 1. Water is diverted from the canal by passing under the discharge diverted through each of the structures is approximately 35 cfs …

Index To The Genera, Subgenera, And Sections Of The Pyrrhophyta, Alfred R. Loeblich Jr, Alfred R. Loeblich Iii

Studies in Tropical Oceanography

No abstract provided.

Summer And Autumn Rainfall In Relation To Epidemics Of Wheat Stem Rust In Western Australia, W A. Shipton

Journal of the Department of Agriculture, Western Australia, Series 4

High summer and autumn rainfalls, followed by rust infection of volunteer plants and favourable conditions during late winter and spring, lead to rust epidemics.

WIDESPREAD outbreaks of wheat stem rust are rare in Western Australia.

The Relationship Of Flooding And Saline Water Tables, Stanley Thomas Smith

Journal of the Department of Agriculture, Western Australia, Series 4

IN Western Australia there are several ways in which salt manifests itself but the most serious and extensive of these is in the valley systems where shallow saline water tables occur.

This type of salt problem is called "valley waterlogging" and occurs in most of the flat valleys throughout the wheatbelt of W.A.

Time Discounting By Certain Forest Landowners, Donald F. Flora

Yale School of the Environment Bulletin Series

No abstract provided.

A Bacteriological Study Of Five Farm Ponds Of The Bear Valley Watershed, Nicholas F. Reuter

Honors Theses, 1963-2015

No abstract provided.

Economic Analysis Of Alternative Flood Control Measures By Digital Computer, Thomas M. Rachford

KWRRI Research Reports

The purpose of this project was to develop a digital computer program for selecting the optimum combination of flood proofing, flood-plain land use, channel improvement, and residual flood damage for a given floodplain. Based on economic efficiency, the optimum policy is selected for each planning unit of the total flood-plain for each period of time called a planning stage. The program was written in Fortran IV for the IBM 7040 and the University of Kentucky Computing Center compiler. The program requires about 23,000 words of core storage and about 30 seconds of execution time per planning-unit-stage for typical conditions. The …