In many pronghorn populations there exists uncertainty about which factors most affect survival rates. These results suggest that improved perinatal condition among fawns born to migrant females in Yellowstone National Park may be driven by higher-quality forage conditions in migrant areas, bolstering conclusions from previous studies that migration represents an adaptive strategy in this population given current conditions in the Park. Diet quality for migrant Pronghorn, as indexed by fecal nitrogen and DAPA, was also generally higher than for non-migrants during a period when the demands of late gestation and lactation were high. Diets of migrants (n = 34) to higher-elevation ranges with higher precipitation and forage quality during May–August were dominated by 68 + 2% forbs, whereas summer diets of non-migrants (n = 21) remaining on the winter range were co-dominated by 48 + 2% forbs and 42 + 1% shrubs. However, spring and summer diets differed for migrants and non-migrants. error) shrubs, 17 + 3% forbs, 13 + 3% grasses, and 3 + 1% other. During winter (January–April), when migrants and non-migrants occupied the same winter range, the overall percent relative density for each forage class in Pronghorn diets (n = 51 composite fecal samples) was 67 + 6% (standard. We characterized the seasonal composition and quality of migrant and non-migrant Pronghorn (Antilocapra Americana) diets in Yellowstone National Park during 2006–2007. Although several late Paleo-Indian kill/butchering locales are known on the Southern High Plains, this feature is the first late Paleo-Indian camp. From faunal and geologic data, site environs are reconstructed as a marshlands rimmed by a narrow border of wet meadows grading into a mixed grass prairie. Projectile points, other lithic tools, and age of the feature indicate a Firstview occupation. The kill/butchering locale contains remains of four bison and three fetuses, a bone expediency tool, a reworked projectile point base, unifacial butchering tools, and flakes. Faunal debris includes remains of butchered pronghorn antelope, rabbits, ducks, grouse, and turtles. Camp debris consists of a projectile point midsection, unifacial and bifacial tools, and flakes. At least two camping episodes are indicated, separated by the kill/butchering event. The feature is found within a cienega or marsh deposit and dates from 8300 to 8600 years. Excavations at Lubbock Lake (41 LU1), Southern High Plains of Texas, revealed the presence of a complex, late Paleo-Indian feature containing a camping area and bison (Bison antiquus) kill/butchering locale.
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