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WINTERING DISTRIBUTIONS AND MIGRATION OF SALTMARSH AND NELSON'S SHARP-TAILED SPARROWS
Abstract We delineate the winter distributions of the five subspecies of Saltmarsh Sharp-tailed (Ammodramus caudacutus) and Nelson's Sharp-tailed (A. nelsoni) sparrows, and comment on patterns ofExpand
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Seaside Sparrow (Ammodramus maritimus)
In Everglades National Park, the Cape Sable Sparrow (A. m. mirabilis) breeds in the extensive muhly grass (Muhlenbergia filipes) marshes where its nests may be constructed very close to the groundExpand
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Comparative costs of promiscuity and monogramy: A test of reproductive effort theory
SummarySharp-tailed sparrows Ammospiza caudacuta and seaside sparrows A. maritima co-occupy salt marshes in northeastern North America and are ecologically similar. Female caudacuta care for theirExpand
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Nestling diets of coexisting salt marsh sparrows: Opportunism in a food-rich environment
The saltmarsh sharp-tailed sparrow (Ammodramus caudacutus) and the morphologically similar seaside sparrow (Ammodramus maritimus) occur together in Atlantic coast salt marshes. Over 2 yr we examinedExpand
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Taxonomic Distribution, Origin, and Evolution of Bilateral Scratching in Ground-Feeding Birds
World representatives of this subfamily while it is absent at least in longspurs (Calcarius), snow buntings (Plectrophenax), and Old World buntings (Emberiza). Harrison (1967) attempted to accountExpand
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Call mimicry by Eastern Towhees and its significance in relation to auditory learning
We document cases of Eastern Towhees (Pipilo eryhrophrhalmus) using mimicked alarm calls from three presumptive m ode ls [Blue Jay (Cvcrnocifta cristctta), Brown Thrasher (Toxostoma rufu m ), andExpand
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Apparent Forced Mating and Female Control in Saltmarsh Sparrows
Abstract Saltmarsh Sparrows (Ammodramus caudacutus) are non-territorial, lack pair-bonds, and practice promiscuous mating behavior and obligate maternal care of young. Behavioral details of matingExpand
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