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Articles 35521 - 35550 of 36512

Full-Text Articles in Life Sciences

Bird Replacement Almost Completed, Jessie Maye Smith Sep 1957

Bird Replacement Almost Completed, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.


Florida Wildlife Tours Announced, Jessie Maye Smith Aug 1957

Florida Wildlife Tours Announced, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.


Field Sparrow Is Delicate, Colorful, Jessie Maye Smith Aug 1957

Field Sparrow Is Delicate, Colorful, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.


Flickers Furnish Shut-In Pleasure, Jessie Maye Smith Aug 1957

Flickers Furnish Shut-In Pleasure, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.


Catbirds Arrive On Regular Schedule, Jessie Maye Smith Aug 1957

Catbirds Arrive On Regular Schedule, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.


Migratory Birds Follow Patterns, Jessie Maye Smith Aug 1957

Migratory Birds Follow Patterns, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.


Kentucky Warbler (Vol. 33, No. 3), Kentucky Library Research Collections Aug 1957

Kentucky Warbler (Vol. 33, No. 3), Kentucky Library Research Collections

The Kentucky Warbler

No abstract provided.


Studies On The Periodicity Of Certain Plankton Species Of Salem Lake, Gene A. Pratt Aug 1957

Studies On The Periodicity Of Certain Plankton Species Of Salem Lake, Gene A. Pratt

Theses and Dissertations

Plankton samples were taken periodically from one station in Salem Lake from the fall of 1955 through the winter of 1957. Other data including the pH, dissolved oxygen content, turbidity, brightness of day, temperature, and time of day were recorded at the time of each collection. The plankton samples were centrifuged and preserved in a 4% formalin solution. They were later examined microscopically, and density, percent density, and percent frequency calculations were made from them for ten selected species and for the five phyla which they represent.


Yellowlegs Here En Route To South, Jessie Maye Smith Jul 1957

Yellowlegs Here En Route To South, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.


Boys, Birds Like This Tree House, Jessie Maye Smith Jul 1957

Boys, Birds Like This Tree House, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.


Observations On The White-Faced Ibis, Plegadis Chihi, In Louisiana, Horace William Belknap Jul 1957

Observations On The White-Faced Ibis, Plegadis Chihi, In Louisiana, Horace William Belknap

LSU Historical Dissertations and Theses

The eight-month study deals with the White-faced Ibis, Plegadis chihi, in southwestern Louisiana. It affirms the absence of the closely related Glossy Ibis, Plegadis falcinellus, as a breeding bird in that area today. Data on feeding habits, social behavior, nesting cycles, and plumage changes in chihi are presented as a step toward clarifying the relationship of these two puzzling forms of ibis; but the full significance of these findings cannot be ascertained until more is known about the habits of falcinellus. The most important conclusions concern plumage changes. It is shown that published descriptions of plumage and molt in chihl …


Blue-Winged Teal Dislikes The Cold, Jessie Maye Smith Jul 1957

Blue-Winged Teal Dislikes The Cold, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.


Drouth Took Heavy Toll Of Bird Life, Jessie Maye Smith Jul 1957

Drouth Took Heavy Toll Of Bird Life, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.


Whole Issue Nebraska Bird Review (July 1957) 25(3) Jul 1957

Whole Issue Nebraska Bird Review (July 1957) 25(3)

Nebraska Bird Review

TABLE OF CONTENTS

Historical Sketch ........................34

Birding in Kearney at Four Miles Per Hour ........................37

Meetings and Reports ........................41

Arthur Sperry Pearse ........................42

Short Comments on Bird Behavior ........................43

General Notes ........................44

Excerpts from Letters to the Editors ........................45

Reports of Nests, Nestlings, and Fledglings ........................46

Book Reviews ........................48


Wading Birds Now Much In Evidence, Jessie Maye Smith Jun 1957

Wading Birds Now Much In Evidence, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.


Vacationers Give Reports On Birds, Jessie Maye Smith Jun 1957

Vacationers Give Reports On Birds, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.


Bird Study Around Home Is Rewarding, Jessie Maye Smith Jun 1957

Bird Study Around Home Is Rewarding, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.


The Incidence Of Nasal Mites In Over-Wintering Red-Wing Blackbirds In The Vicinity Of Utah Lake, Utah, George M. Talley Jun 1957

The Incidence Of Nasal Mites In Over-Wintering Red-Wing Blackbirds In The Vicinity Of Utah Lake, Utah, George M. Talley

Theses and Dissertations

This paper reports the incidence and associations of four species of mites, Paraneonyssus icteridius, Ptilonyssus n. sp. "A", Sternostoma n. sp. "A" , and Speleognathus sp., found in the nasal cavities of the common red-wing blackbird (Agelaius phoeniceus ssp.) and Brewer's blackbird (Euphagus cyanocephalus cyanocephalus Wagler) over-wintering in the vicinity of Provo, Utah County, Utah. Three species of mites are reported for the first time from these birds, and two of these three are undescribed species.


Cormorant Among Water Birds Here, Jessie Maye Smith May 1957

Cormorant Among Water Birds Here, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.


Feathers Are Very Helpful To Birds, Jessie Maye Smith May 1957

Feathers Are Very Helpful To Birds, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.


The Embryology Of The Paradise Fish, Macropodus Opercularis Linnaeus, Lewis M. Mulkay May 1957

The Embryology Of The Paradise Fish, Macropodus Opercularis Linnaeus, Lewis M. Mulkay

Theses and Dissertations

The development of Sacropodus opercularis Linnaeus, (Perciformes: Anabantidae), is described from cleavage to five days post hatching. For the most part M. opercularis follows the pattern of typical teleostean development except as noted below: 1. The heart develops under the left eye along the anterior margin of the yolk sac. This is similar to that reported by Ingesoll (1951) for the Blue Gourami, Trichogaster trichopterus. 2. The ear develps from the head mesenchyme alongside the brain rather than from a placode. 3. The gut develops first in the posterior region then differentiates cephalad. It was also learned that: 1. No …


Birds Of Dazzling Brilliance Found, Jessie Maye Smith May 1957

Birds Of Dazzling Brilliance Found, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.


Kentucky Warbler (Vol. 33, No. 2), Kentucky Library Research Collections May 1957

Kentucky Warbler (Vol. 33, No. 2), Kentucky Library Research Collections

The Kentucky Warbler

No abstract provided.


The Use Of Branchiostegal Rays To Determine Age Of Lake Trout Salvelinus Namaycush Walbaum, Ross Vivian Bulkley May 1957

The Use Of Branchiostegal Rays To Determine Age Of Lake Trout Salvelinus Namaycush Walbaum, Ross Vivian Bulkley

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Any method used in aging fish must fulfill certain requirements to be satisfactory. If the method is inaccurate, naturally little reliance can be placed upon its use. If considerable study of the method and much practice are required before accurate readings can be obtained, the method will not come into widespread use. The requirements of an aging method, then are that it must be accurate and comparatively easy. The scale method for aging lake trout (Salvelinus namaycush Walbaum) unfortunately does not fulfill these requirements. It has always been difficult to tell the age of lake trout by the examination …


The Effects Of Hunting Season Length On Comparable Pheasant Populations, Temple A. Reynolds May 1957

The Effects Of Hunting Season Length On Comparable Pheasant Populations, Temple A. Reynolds

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

For many years sportsmen have speculated that hunting limits pheasant populations. With the abolition of the Pheasant Game Farm program in Utah in 1953, this popular concept gained much impetus with the result that, because of public disfavor to a longer season, a 3 to 5 day season on pheasants is the maximum that has been called in northern Utah and this only in areas classed as "better" pheasant habitat.

In contrast to the short seasons in Utah, pheasant seasons in southern Idaho have been from 8½ to 15½ days long for the past 10 years, and will be even …


Evidence Against The Transmission Of Staphylococci By The Mosquito Culex Tarsalis, John R. Molenda May 1957

Evidence Against The Transmission Of Staphylococci By The Mosquito Culex Tarsalis, John R. Molenda

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Staphylococcal synovitis is a pathological condition of birds involving primarily the wing and leg joints. It is frequently referred to as arthritis, osteoarthritis, bursitis, hock disease, staphylococcosis, and weak leg.

The disease has been reported throughout various parts of the world as having been found in a great variety of avian hosts including pheasants, chickens, pigeons, canaries, geese, ducks, grouse, and turkeys.

Miner (1945) presented results of a survey made on turkey diseases in Sanpete County, Utah, which indicated staphylococcal synovitis to be responsible for the greatest numbers of deaths. His report cites this infection as having been found in …


Purple Martins In Annual Gathering, Jessie Maye Smith Apr 1957

Purple Martins In Annual Gathering, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.


Cowbird Lays Eggs In Nest Of Others, Jessie Maye Smith Apr 1957

Cowbird Lays Eggs In Nest Of Others, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.


Bird's Adaptation Is Strange Power, Jessie Maye Smith Apr 1957

Bird's Adaptation Is Strange Power, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.


Whole Issue Nebraska Bird Review (April 1957) 25(2) Apr 1957

Whole Issue Nebraska Bird Review (April 1957) 25(2)

Nebraska Bird Review

TABLE OF CONTENTS

1956 Nesting Report ........................18

Report .of the Mid-Winter Convention........................ 21

Dr. John Todd Zimmer ........................22

Letters of. Special Note........................ 22

Cowbird Eggs in Nests of Bell's Vireos........................ 23

Notes ........................24

Treasurer's Report for the Year 1956 ........................30

Brief Summary of 1956 Hikes........................ 31

Book Reviews ........................32