WINTERING DISTRIBUTIONS AND MIGRATION OF SALTMARSH AND NELSON'S SHARP-TAILED SPARROWS

@inproceedings{Greenlaw2007WINTERINGDA,
  title={WINTERING DISTRIBUTIONS AND MIGRATION OF SALTMARSH AND NELSON'S SHARP-TAILED SPARROWS},
  author={Jon S. Greenlaw and Glen Everett Woolfenden},
  year={2007}
}
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 of migration. The two subspecies of A. caudacutus (A. c. caudacutus, A. c. diversus) have similar core winter ranges that extend along the Atlantic coast from North Carolina to northeastern Florida. They also occupy two isolated areas within peninsular Florida in Everglades National Park and on the… 
Winter Survivorship and Site Fidelity of Nelson's, Saltmarsh, and Seaside Sparrows in North Carolina
Abstract. Three species of coastal sparrows (Ammodramus nelsoni, Nelson's Sparrow; A. caudacutus, Saltmarsh Sparrow; and A. maritimus, Seaside Sparrow) reside in North Carolina salt marshes in winter
Winter composition of Nelson’s Sparrow (Ammodramus nelsoni) and Saltmarsh Sparrow (Ammodramus caudacutus) mixed flocks in coastal Virginia
ABSTRACT We captured 1,055 Nelson’s (Ammodramus nelsoni) and Saltmarsh (Ammodramus caudacutus) sparrows during the winter season (2006–2014) within the outer Coastal Plain of Virginia to determine
Patterns of population structure and productivity in Saltmarsh Sparrows
PATTERNS OF POPULATION STRUCTURE AND CONNECTIVITY IN SALTMARSH SPARROWS By Jennifer Walsh University of New Hampshire, December, 2009 The Saltmarsh Sparrow {Ammodramus caudacutus) is one of the few
Mercury levels of Nelson’s and saltmarsh sparrows at wintering grounds in Virginia, USA
TLDR
A comparison of stable isotopes of nitrogen and carbon suggests that the higher exposure of saltmarsh sparrows may be not due to feeding at a higher trophic level, as previously hypothesized, but rather could be related to a difference in the carbon source at the base of each species’ food chain.
Fine-Scale Population Structure and Asymmetrical Dispersal in an Obligate Salt-Marsh Passerine, the Saltmarsh Sparrow (Ammodramus caudacutus)
TLDR
The genetic structure that is found in Saltmarsh Sparrows may result from natal philopatry and breeding-site fidelity, combined with restricted dispersal due to obligate dependence on a patchy habitat, and suggest that fine-scale population structure may be important in some migratory passerines.
Mercury in breeding and wintering Nelson’s Sparrows (Ammodramus nelsoni)
TLDR
Blood, breast feathers and the first primary feather were sampled from Nelson’s Sparrows wintering in North Carolina coastal salt marshes and breeding in wetland systems in North Dakota and Ontario, Canada to provide significant insight on the timing of molt in this species and how Hg exposure varies regionally and seasonally.
Mercury in non-breeding sparrows of North Carolina salt marshes
TLDR
The data provide a baseline for future Hg assessments in Nelson’s, Saltmarsh and Seaside Sparrows and indicate that Hg exposure on breeding sites may be increasing and that high levels of HG exposure during the breeding season may affect blood Hg concentrations year-round in Saltm Marsh Sparrows.
Drivers of introgression and fitness in the Saltmarsh-Nelson's Sparrow hybrid zone
TLDR
This body of research focuses on dynamics of hybridization between the Saltmarsh and Nelson’s Sparrow across two populations in the center of the hybrid zone to gain a window into both the evolutionary processes underlying the relationship between these species and the role of climate change and adaptive introgression on the future persistence of the two sparrows.
Long-term monitoring of mercury in adult saltmarsh sparrows breeding in Maine, Massachusetts and New York, USA 2000–2017
TLDR
It is found that mercury exposure differed by site and year but there was no consistent temporal trend across sites, and seasonal variation in blood mercury concentrations and a positive relationship between mercury concentrations of blood and innermost primary feather, but not between blood and tail feather.
Mercury in Nelson's Sparrow Subspecies at Breeding Sites
TLDR
Mercury was characterized in Nelson's Sparrows near Grand Forks, indicating that this area may represent a biological mercury hotspot and warrants further research to determine if wildlife populations of conservation or recreational interest in this area might be experiencing negative effects due to mercury exposure.
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