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Common Grackle breeding on bottomland forest restoration sites

June 22, 2011

Two of 36 forest restoration sites in the Mississippi Alluvial Valley surveyed from 2000-2002 harbored Quiscalus quiscula (Common Grackle). Occupied sites were in less-forested landscapes and had sparser understory vegetation due to flooding. Probability of daily nest survival (0.9077) of 169 Common Grackle nests was influenced by nest-placement, temporal, and landscape effects. Age of nest markedly affected nest survival, which increased from <0.89 during egg laying (age < 6 days) to >0.92 when nestlings were present (age > 18 days). Extrapolating daily nest survival to a 31 -day nest period resulted in 5% nest success, far less then previously estimated for this species in more northern latitudes and likely less than required to sustain populations on these sites.

Publication Year 2011
Title Common Grackle breeding on bottomland forest restoration sites
DOI 10.1656/058.010.0101
Authors Daniel J. Twedt
Publication Type Article
Publication Subtype Journal Article
Series Title Southeastern Naturalist
Index ID 70004050
Record Source USGS Publications Warehouse
USGS Organization Patuxent Wildlife Research Center