Thesis (Ph. D.)--University of Arizona, 1969. / Includes bibliographical references (p. 161-168). Also available via Internet as PDF file through Southern Oregon Digital Archives: http://soda.sou.edu. Search Bioregion Collection.

Thesis (Ph. D.)--Ohio State University, 1982. / Includes vita. Includes bibliographical references (leaves 124-132). Available online via OhioLINK's ETD Center.

No description available.

No description available.

Thesis (Ph. D.) University of Missouri-Columbia, 2006. / The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on August 7, 2007) Includes bibliographical references.

Thesis (M.S.)--Eastern Illinois University, 2009. / Includes bibliographical references (leaves 41-43).

Thesis--Wisconsin. / Includes bibliographical references (leaves 92-98).

No description available.

Little is known about the adaptive significance of vigilance behavior in grey squirrels (Sciurus carolinensis) in east-central Indiana. Moreover, vigilance behavior in squirrels often differs among habitat types. In this study my objective was to determine if vigilance behavior in grey squirrels differs between areas of low and high levels of human activity.Information on vigilance behavior was collected during 855 times of 10second observation periods. Vigilant behavior was recorded each time a squi`6l stopped what it was doing and became vigilant (i.e., looked about its surrounding) during an observation period. Vigilance was monitored in two areas that differ in the amount of activity (high disturbance area) and the other area received little human activity (low disturbance area) In the wood and open area.Vigilant behavior was recorded from two distance categories (0 - 5, and > 5 meters) with respect to distance the squirrel appeared from the nearest tree or closest squirrel.Vigilance behavior in grey squirrels did not differ between a high disturbance area and a low disturbance area. The data suggested that the role of vigilance in grey squirrels (Sciurus carolinensis) is functioning for predator avoidance and to identification of potential competitors. There was no special pattern variation of vigilance behavior between the different habitats investigated. There was no difference of squirrel vigilance behavior between disturbed and undisturbed wood but there was significant difference of vigilant behavior in disturbed open area and in undisturbed open area. / Department of Biology

Thesis (M.S.)--Eastern Illinois University, 1977. / Includes bibliographical references (leaves 34-36).