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Ornithology Commons™

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1968

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Articles 61 - 80 of 80

Full-Text Articles in Ornithology

Early European Settlers First To Take Notice Of The Robin, Jessie Maye Smith Feb 1968

Early European Settlers First To Take Notice Of The Robin, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.


Purple Martins To Return Soon To Survey Houseing Conditions, Jessie Maye Smith Feb 1968

Purple Martins To Return Soon To Survey Houseing Conditions, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.


World Of Birds, Watchers Described, Jessie Maye Smith Feb 1968

World Of Birds, Watchers Described, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.


Palo Pinto Sojourn Shows Bald Eagles, Jessie Maye Smith Feb 1968

Palo Pinto Sojourn Shows Bald Eagles, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.


North American Shorebirds Gain Popularity In New Book, Jessie Maye Smith Feb 1968

North American Shorebirds Gain Popularity In New Book, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.


Kentucky Warbler (Vol. 44, No. 1), Kentucky Library Research Collections Feb 1968

Kentucky Warbler (Vol. 44, No. 1), Kentucky Library Research Collections

The Kentucky Warbler

No abstract provided.


The Evolution Of Duck Courtship, Paul A. Johnsgard Feb 1968

The Evolution Of Duck Courtship, Paul A. Johnsgard

Papers in Ornithology

The courtship of ducks is unusual in several aspects. In temperate zones it generally begins very early, usually on the wintering grounds, so courtship is not a manifestation of territorial proclamation and defense as is the case with many songbirds. Nor, because of its early initiation, is courtship closely correlated with gonad growth and fertilization; rather, pair formation is normally completed prior to the period of maximum gonadal activity. Therefore, reproductive behavior in ducks may be conveniently divided into an early phase of conspicuous displays associated with actual pair formation, followed by the later and less elaborate behavior patterns concerned …


Hubby Turns Into Birdman, Jessie Maye Smith Jan 1968

Hubby Turns Into Birdman, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.


Habitat Of Warblers Threatened By Course, Jessie Maye Smith Jan 1968

Habitat Of Warblers Threatened By Course, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.


Birds Wing Greeting Variety On Season's Christmas Cards, Jessie Maye Smith Jan 1968

Birds Wing Greeting Variety On Season's Christmas Cards, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.


Damage To Ocean Studied, Jessie Maye Smith Jan 1968

Damage To Ocean Studied, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.


Weather Hampers Christmas Bird Count, Jessie Maye Smith Jan 1968

Weather Hampers Christmas Bird Count, Jessie Maye Smith

Jessie Maye Smith Birds and Watchers Columns Collection

No abstract provided.


The Indian Mynah, John L. Long Jan 1968

The Indian Mynah, John L. Long

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

THE Common or Indian Mynah (Acridotheres tristis) inhabits Afghanistan, Baluchistan, southern Russian Turkestan, India, Ceylon and the Andaman Islands.


The Red-Whiskered Bulbul, John L. Long Jan 1968

The Red-Whiskered Bulbul, John L. Long

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

Widely distributed in both Africa and Asia, Bulbuls are a largely tropical group of fruit eating birds ranging in size from that of a house sparrow to a blackbird.


The Spice Finch, John L. Long Jan 1968

The Spice Finch, John L. Long

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

THE Spice Finch (Lonchura punctulata) is also known as Nutmeg Finch or Mannikin, Spice bird, Spotted Munia, Common Munia, Ricebird and Scaly-breasted Munia.

It is an east and south east Asian species inhabiting Malaya, Singapore, Penang, India, Ceylon, Burma, Indo-China, Yunnan, Formosa and the Philippines.

The dangers associated with such a species being introduced to Western Australia are great.


Survey Of Albino Birds In Arkansas, Earl L. Hanebrink Jan 1968

Survey Of Albino Birds In Arkansas, Earl L. Hanebrink

Journal of the Arkansas Academy of Science

No abstract provided.


The Role Of Adventitious Reinforcement In Operant Discrimination, Alan Kamil, John W. Davenport Jan 1968

The Role Of Adventitious Reinforcement In Operant Discrimination, Alan Kamil, John W. Davenport

Avian Cognition Papers

Rats were trained in 2 SD-SΔ discrimination experiments in which the effects of an SD-postponement contingency during SΔ and temporal regularity of SΔ duration were assessed. Experiment I showed that discrimination is markedly facilitated by the presence of an SD-postponement contingency of either fixed or variable duration. Experiment II showed that variable-duration SΔ periods in a noncontingent schedule can also greatly enhance formation of an operant discrimination. These effects were attributed to differences in the probability of adventitious reinforcement of SΔ behavior by SD events.


Some Putative Mandarin Duck Hybrids, Paul A. Johnsgard Jan 1968

Some Putative Mandarin Duck Hybrids, Paul A. Johnsgard

Paul Johnsgard Collection

Prestwich (1960) and Gray (1958) have concluded, mirroring Delacour and Mayr (1945) and Seth-Smith (1922), that the Mandarin Duck is unable to hybridize, even with its nearest living relative the Wood Duck. After reviewing the literature, however, I listed (1960) the Mandarin Duck as having probably hybridized with the Wood Duck, and also mentioned the possibility of hybridization with one or more species of Anas. Since then I have been hopeful that actual specimens of Mandarin Duck hybrids might be located to substantiate this vulnerable position, and it is now possible to report on some probable hybrids.


Studies On The Avifauna Of Burgner Acres, An Upland Stream-Side, Ash-Elm Forest And Its Edge, Kerry Lee Bryan Jan 1968

Studies On The Avifauna Of Burgner Acres, An Upland Stream-Side, Ash-Elm Forest And Its Edge, Kerry Lee Bryan

Masters Theses

No abstract provided.


Studies On Blood Parasites Of Birds In Coles County, Illinois, Edward G. Fox Jan 1968

Studies On Blood Parasites Of Birds In Coles County, Illinois, Edward G. Fox

Masters Theses

No abstract provided.