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1 December 2002 PERCH CHARACTERISTICS OF ACADIAN FLYCATCHERS (EMPIDONAX VIRESCENS) IN SOUTHERN BOTTOMLAND HARDWOOD FORESTS
Michael P. Guilfoyle, Richard A. Fischer, James S. Wakeley
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Abstract

Perch-site selection is thought to be an important component of foraging success for sit-and-wait avian predators, such as flycatchers. Perch selection has further consequences for territorial advertisement and display. We quantified perch characteristics of Acadian Flycatchers in three bottomland hardwood forests in Arkansas, Louisiana, and South Carolina. We compared measurements made at flycatcher perches with those made at randomly selected trees and branches. In two of our study areas, flycatchers perched on dead limbs more often than expected by chance, and foliage volume was less around flycatcher perches than at randomly selected branches. Both of these results suggest a preference for foraging and displaying sites that provide a relatively unobstructed view. Discriminant function analysis revealed substantial overlap in perch-site characteristics among study areas, indicating that species-wide preferences were at least as important as local conditions in perch-site selection by Acadian Flycatchers.

Michael P. Guilfoyle, Richard A. Fischer, and James S. Wakeley "PERCH CHARACTERISTICS OF ACADIAN FLYCATCHERS (EMPIDONAX VIRESCENS) IN SOUTHERN BOTTOMLAND HARDWOOD FORESTS," Southeastern Naturalist 1(4), 353-364, (1 December 2002). https://doi.org/10.1656/1528-7092(2002)001[0353:PCOAFE]2.0.CO;2
Published: 1 December 2002
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