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Document Type

Research

Abstract

Wood duck roosting flights were studied at a marsh near the mouth of Paint Creek, Allamakee County, Iowa, during late summer and fall of 1959 and 1960. Evening roosting flight counts were superior to morning counts for estimating roosting populations. Changes in times of flights and illumination associated with flights were noted as the season advanced. The roosting population built up to a pre-migration peak in mid-September. Counts fluctuated erratically after migration started about October 1, and the roost was abandoned in early November. Data collected at Paint Creek Roost were typical in general of those collected at the other 20 roosts investigated. Comparison of pre-migration populations by annual counts made about September 20 can be expected to show year-to-year changes in the Paint Creek Roost wood duck population.

Publication Date

1961

Journal Title

Proceedings of the Iowa Academy of Science

Volume

68

Issue

1

First Page

264

Last Page

270

Copyright

© Copyright 1961 by the Iowa Academy of Science, Inc.

Language

EN

File Format

application/pdf

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