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Date of Award

5-1973

Culminating Project Type

Thesis

Department

Biology

College

College of Science and Engineering

First Advisor

Alfred Hopwood

Second Advisor

Alfred Grewe

Third Advisor

Ruben Parson

Keywords and Subject Headings

Bank swallow, rough-winged swallow, Mississippi River

Abstract

A program of field observations was devised to determine the extent of use of the Mississippi River near Montice1lo, Minnesota, by bank and rough-winged swallows. The study area extended from one mile above a nuclear-powered electricity generating plant to three miles below the plant. Field work was initiated in June, 1971, and terminated in September, 1972. Swallow colonies in river banks were inspected and various parameters were recorded. Birds were observed during nesting and fledging periods to determine behavior. Swallows were mist-netted and banded to determine ranges in hatching and fledging dates and to determine the size of the local breeding swallow community. Band recapture data for 1972 indicated a dispersal of birds banded in 1971 and a marked habitat preference. Post-fledging data indicated a marked preference for foraging over a rapids upstream of the power plant and for perching on transmission wires near this rapids. The normal operation of the power plant did not appreciably alter the usage of the river by bank and rough-winged swallows.

Included in

Biology Commons

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