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Digital playback and improved trap design enhance capture of migrant soras and Virginia rails

Journal of Field Ornithology

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Abstract

We used playback of rail vocalizations and improved trap design to enhance capture of fall migrant Soras (Porzana carolina) and Virginia Rails (Rallus limicola) in marshes bordering the tidal Patuxent River, Maryland. Custom-fabricated microchip message repeating sound systems provided digitally recorded sound for long-life, high-quality playback. A single sound system accompanied each 30-45 m long drift fence trap line fitted with 1-3 cloverleaf traps. Ramped funnel entrances improved retention of captured rails and deterred raccoon (Procyon lotor) predation. Use of playback and improved trap design increased trap success by over an order of magnitude and resulted in capture and banding of 2315 Soras and 276 Virginia Rails during September and October 1993-1997. The Sora captures more than doubled the banding records for the species in North America. This capture success demonstrates the efficacy of banding large numbers of Soras and Virginia Rails on migration and winter concentration areas.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Digital playback and improved trap design enhance capture of migrant soras and Virginia rails
Series title:
Journal of Field Ornithology
Volume
69
Issue:
3
Year Published:
1998
Language:
English
Contributing office(s):
Patuxent Wildlife Research Center
Description:
466-473
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Field Ornithology
First page:
466
Last page:
473
Number of Pages:
8