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The Center for Native Grasslands Management

Title: Reproductive Success of Grassland Sparrows on a Reclaimed Surface Mine in West-Virginia
Year: 1982
Author(s): Wray, T., Strait, K. A., Whitmore, R. C.
Source Title: Auk
Source Type: Journal
pages: 157-164
Original Publication: http://  
Abstract: There productive success of Grasshopper Sparrows (Ammodramus savannarum), Savannah Sparrows(Passerculus sandwichensis), Vesper Sparrows(Pooecetes gramineus),and Field Sparrows (Spizella pusilla) breeding on a reclaimed surface mine in northern West Virginia was studied from 1978 through 1980. Only Vesper Sparrows showed significant (P (0.05) annual differences in clutch size. Predation was the major cause of egg and nestling losses during all 3 yr. Of 185 nests located, 80 (43% were presumed lost to predators. Our study site, surrounded by woodlots and pastureland, apparently concentrated predators. We believe northern black racers (Coluber constrictor constrictor) and Common Crows (Corvus brachyrhynchos) were the major predators. Generally, predators were equally successful