The use of a Rotor-Winged Aircraft in Conducting Nesting Surveys of Ospreys in Northern Idaho
Journal
Raptor Research
Volume
10
Issue
3 (Fall)
Year
1976
Pages
77-83
Section
Scientific Papers
Online Text
Abstract
Use of a helicopter to collect data on active nests, clutch sizes, hatching successes, and nestling counts of Ospreys nesting in northern Idaho are described. This method is economically practical, allows for the collection of nesting data over a large area in a short period of time, and enables researchers to collect data impossible to obtain by other methods. No adverse effects to the nesting success of this population were noted. Productivity levels were essentially equivalent to those of past years. Disturbance, reaction of adults, visibility of eggs and nestlings, costs, and validity of data are discussed. Recommendations are offered for future aerial surveys of nesting Ospreys.
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