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Effects of dietary aluminum, calcium, and phosphorus on egg and bone of European starlings Effects of dietary aluminum, calcium, and phosphorus on egg and bone of European starlings

Egg and bone of passerine birds nesting in acidified habitats may be affected by high levels of Al or P, or low levels of Ca. Nine treatments of three levels of dietary Al (target levels of 200, 1,000, and 5,000 μg/g) and three levels of Ca:P (target levels of NN = 1.3% Ca: 0.9% P; LL = 0.19 Ca:0.45 P; LH = 0.19 Ca: 1.65 P) were fed to 16–17 starling pairs during two breeding seasons...
Authors
A.K. Miles, C.E. Grue, G.W. Pendleton, J. H. Soares

Environmental contaminants in bald eagle eggs—1980–84—and further interpretations of relationships to productivity and shell thickness Environmental contaminants in bald eagle eggs—1980–84—and further interpretations of relationships to productivity and shell thickness

Bald eagle (Haliaeetus leucocephalus) eggs were collected in 15 States in the United States in 1980–1984 and analyzed for organochlorine pesticides, polychlorinated biphenyls (PCBs), and mercury. Data were compared and combined with data from earlier studies to examine trends and refine relationships of contaminants to shell thickness and young production. Moderate shell thinning...
Authors
Stanley N. Wiemeyer, Christine M. Bunck, Charles J. Stafford

Natal dispersal and gene flow in white-tailed deer in northeastern Minnesota Natal dispersal and gene flow in white-tailed deer in northeastern Minnesota

I documented natal dispersal and gene flow in 79 yearling white-tailed deer (Odocoileus virginianus) in northeastern Minnesota during 1974–1988. Sixty-four percent (n = 28) of 44 males and 20% (n = 7) of 35 females dispersed from their natal home ranges when 1.0–1.5-years old. Eighty-six percent and 95%, of all yearlings including nondispersers, dispersed ≤26 and ≤38 km, respectively...
Authors
M.E. Nelson

Natural range expansion and local extirpation of an exotic psittacine--an unsuccessful colonization attempt Natural range expansion and local extirpation of an exotic psittacine--an unsuccessful colonization attempt

The Brown-throated Parakeet Aratinga pertinax is native to Panama, northern South America, and the islands off the northern coast of Venezuela. It is widely believed that the parakeet was introduced to St. Thomas, Virgin Islands, from Curacao before the mid-19th century, although no records exist as to when and how this may have occurred. The parakeet was not recorded from Vieques or...
Authors
J. W. Wiley

In memoriam: Arthur Bernard Singer, 1917-1990 In memoriam: Arthur Bernard Singer, 1917-1990

Arthur Bernard Singer was born 4 December 1917, and died 6 April 1990. Although brought up in New York City, Arthur developed an early fascination with birds. His favorite haunts were the Bronx Zoo and the American Museum of Natural History, where Robert Cushman Murphy encouraged his efforts and where Arthur acquired a worldwide perspective. After graduating from Cooper Union Art School...
Authors
Chandler S. Robbins

Canine parvovirus effect on wolf population change and pup survival Canine parvovirus effect on wolf population change and pup survival

Canine parvovirus infected wild canids more than a decade ago, but no population effect has been documented. In wild Minnesota wolves (Canis lupus) over a 12-yr period, the annual percent population increase and proportion of pups each were inversely related to the percentage of wolves serologically positive to the disease. Although these effects did not seem to retard this large extant...
Authors
L.D. Mech, S.M. Goyal

Resistance of young wolf pups to inclement weather Resistance of young wolf pups to inclement weather

Three observations of young wolf (Canis lupus) pups in Denali National Park and Preserve, Alaska, and two on Ellesmere Island, Northwest Territories, Canada, indicate that pups
Authors
L.D. Mech
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