Type of Document Master's Thesis Author Pierson, Thomas A. URN etd-11092012-040211 Title Utilization of natural nest sites by Eastern Bluebirds in southwestern Virginia Degree Master of Science Department Fisheries and Wildlife Advisory Committee
Advisor Name Title Adkisson, Curtis S. Committee Chair Cross, Gerald H. Committee Member Scanlon, Patrick F. Committee Member Tipton, A. R. Committee Member Keywords
- Bird habitat
Date of Defense 1978-11-05 Availability restricted AbstractEastern Bluebirds (Sialis sialis) were found to be
utilizing natural nest sites in the vicinity of Blacksburg,
Virginia, during 1976 and 1977. Forty-seven natural nest
sites, 37 in fencepost cavities and ten in tree cavities
were discovered by driving roads in rural areas, scanning
fencerows and utility wires with binoculars, and by
searching fencerows on foot. Ninety-one percent of nest
cavities used by bluebirds were made by woodpeckers. Height
of cavity entrance, entrance diameter, and distance from
entrance to cavity bottom were best able to distinguish
anong bluebird fencepost nest cavities, nest demonstration
display sites, and Starling (Sturnus vulgaris) fencepost
nest cavities, using discriminant function analysis. Four
nest cavities used by bluebirds in 1976 were no longer
available in 1977 due to the replacement of fenceposts and
tree limb breakage. No new cavities in fenceposts were observed being excavated by woodpeckers.
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