First Documented Cases of Polygyny in the Grasshopper Sparrow

Daniel M. Small; Maren E. Gimpel; Jared Parks; Jason B. Guerard; Douglas E. Gill

doi:10.1676/09-021.1

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Daniel M. Small,^*,** Maren E. Gimpel,^** Jared Parks,^*** Jason B. Guerard,^**** Douglas E. Gill^**,*****

^*Corresponding author; e-mail: Daniel_M_Small@yahoo.com
^**Chester River Field Research Center, P. O. Box 421, Chestertown, MD 21620, USA.
^***Eastern Shore Land Conservancy, 601 Locust Street, Suite 302, Cambridge, MD 21613, USA.
^****New Jersey Audubon Society, Cape May Bird Observatory, Northwood Center, 701 East Lake Drive P. O. Box 3, Cape May Point, NJ 08212, USA.
^*****Department of Biology, University of Maryland, College Park, MD 20742, USA.

Abstract

We studied the breeding biology of Grasshopper Sparrows (Ammodramus savannarum) on restored grasslands in Maryland from 1999 to present. We report the first documented cases of social polygyny in this species. Polygyny increased reproductive success for males in two of four cases, but its rarity suggests it is only a facultative behavior for this usually socially monogamous species

Citation Download Citation

Daniel M. Small, Maren E. Gimpel, Jared Parks, Jason B. Guerard, and Douglas E. Gill "First Documented Cases of Polygyny in the Grasshopper Sparrow," The Wilson Journal of Ornithology 121(4), 822-825, (1 December 2009). https://doi.org/10.1676/09-021.1

Received: 31 January 2009; Accepted: 1 June 2009; Published: 1 December 2009

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