Nest-site biology of the California condor
N.F.R. Snyder, R.R. Ramey, F.C. Sibley
1986, Condor (88) 228-241
A study of 72 historical and recent nests of the California Condor (Gymnogyps californianus) has revealed considerable variability in nest-site characteristics. This paper primarily summarizes the data on nest elevations and dimensions, entrance orientations, nest longevity and re-use, vulnerability of sites to natural enemies, and use of sites by other...
Metal residues in bat colonies, Jackson County, Florida, 1981-1983
D. R. Clark Jr., A.S. Wenner, John F. Moore
1986, Florida Field Naturalist (14) 38-45
No abstract available....
Chemical scent constituents in urine of wolf (Canis lupus) and their dependence on reproductive hormones
J. Raymer, D. Wiesler, M. Novotny, C. Asa, U.S. Seal, L.D. Mech
1986, Journal of Chemical Ecology (12) 297-314
The volatile components of castrated male and ovariectomized female wolf urine were investigated and correlated with the administration of testosterone or estradiol and progesterone. The results indicate that testosterone induces in the castrated male the formation of some compounds typically associated with the intact male, while reducing the levels of...
This week?s Citation Classic: 'Stickel, L. F. A comparison of certain methods of measuring ranges of small mammals. J. Mammalogy 35: 1-15, 1954.'
L.F. Stickel
1986, Current Contents / Agriculture, Biology & Environmental Sciences (17) 18
During my first employment as a junior biologist conducting food habits analyses at the Patuxent Research Refuge (now Patuxent Wildlife Research Center) of the US Fish and Wildlife Service, the first station director, Arnold L. Nelson, gave each staff biologist the opportunity to spend a little time conducting field studies...
[Book review] Utah birds: Geographic distribution and systematics, by W.H. Behle
Richard C. Banks
1986, Wildlife Review (201) 537-538
Review of: Behle, William H. 1985. Utah Birds: Geographic Distribution and Systematics. Occasional Publication No. 5, Utah Museum of Natural History, University of Utah, Salt Lake City, Utah. 147 pp....
Use of captive starlings to determine effects of environmental contaminants on passerine reproduction: Pen characteristics and nestling food requirements
Christian E. Grue, L.P. Franson
1986, Bulletin of Environmental Contamination and Toxicology (37) 655-663
No abstract available....
Effect of Orthene on an unconfined population of the meadow vole (Microtus pennsylvanicus)
David A. Jett, James D. Nichols, James E. Hines
1986, Canadian Journal of Zoology (64) 243-250
The possible impact on Microtus pennsylvanicus of ground applications of Orthene® insecticide was investigated in old-field habitats in northern Maryland during 1982 and 1983. The treatment grids in 1982 and 1983 were sprayed at 0.62 and 0.82 kg active ingredient/ha, respectively. A capture–recapture design robust to unequal capture probabilities was utilized to estimate population...
Organochlorine contaminants in passeriformes and other avian prey of the peregrine falcon in the western United States
L.R. DeWeese, L. C. McEwen, Gary L. Hensler, B.E. Petersen
1986, Environmental Toxicology and Chemistry (5) 675-693
About 1,150 individuals of 38 species of Passeriformes and other small birds were collected in 1980 at 36 locations in eight western U.S. states for organochlorine (OC) chemical analysis. The bird carcasses (less beak, tarsi, gastrointestinal tract, and feathers) were combined by species and location (4 to 15 specimens per...
Hatching success of Caspian terns nesting in the lower Laguna Madre, Texas, USA
C. A. Mitchell, T. W. Custer
1986, Colonial Waterbirds (9) 86-89
The average clutch size of Caspian Terns nesting in a colony in the Lower Laguna Madre near Laguna Vista, Texas, USA in 1984 was 1.9 eggs per nest. Using the Mayfield method for calculating success, one egg hatched in 84.1% of the nests and 69.8% of the eggs laid hatched....
Mercury, cadmium, lead, and selenium in three waterbird species nesting in Galveston Bay, Texas, USA
Kirk A. King, E. Cromartie
1986, Colonial Waterbirds (9) 90-94
Heavy metal and selenium concentrations were determined in Olivaceous Cormorants (Phalacrocorax olivaceus ), Laughing gulls (Larus atricilla ), and Black Skimmers (Rynchops niger ) nesting in Galveston Bay, Texas, during 1980-81. Lead was detected at low levels in a small proportion of the liver samples. Mercury was present...
Estimating nest detection probabilities for white-winged dove nest transects in Tamaulipas, Mexico
J.D. Nichols, R. E. Tomlinson, G. Waggerman
1986, The Auk (103) 825-828
Nest transects in nesting colonies provide one source of information on White-winged Dove (Zenaida asiatica asiatica) population status and reproduction. Nests are counted along transects using standardized field methods each year in Texas and northeastern Mexico by personnel associated with Mexico's Office of Flora and Fauna, the Texas Parks and...
Canine parvovirus infection in wolves (Canis lupus) from Minnesota
L.D. Mech, S.M. Goyal, C.N. Bota, U.S. Seal
1986, Journal of Wildlife Diseases (22) 104-106
No abstract available....
Sources of variation in extinction rates, turnover, and diversity of marine invertebrate families during the Paleozoic
J.D. Nichols, R.W. Morris, C. Brownie, K. H. Pollock
1986, Paleobiology (12) 421-432
We have recently shown how capture-recapture models can be used in conjunction with stratigraphic range data to estimate taxonomic extinction rates and taxonomic diversity. Here we present a new method that can be used to estimate taxonomic turnover (defined here as the proportion of taxa extant at...
Winter distribution and oiling of common terns in Trinidad: A further look
R.M. Erwin, G. J. Smith, R. B. Clapp
1986, Journal of Field Ornithology (57) 300-308
Common Terns were studied during January and March 1985 in Trinidad as part of wintering terns in Latin America. Eighty-nine birds were captured, 33 in January, 56 in March. Terns averaged 102 .+-. 0.9 g, with March birds weighing more than those caught in January. This weight is similar...
The use of natural vs. man-modified wetlands by shorebirds and waterbirds
R. Michael Erwin, Malcolm Coulter, H. Cogswell
1986, Colonial Waterbirds (9) 137-138
The loss of wetlands continues world-wide. The impact especially has been felt in coastal areas, but water management elsewhere has resulted in marked reductions of aquatic bird populations. Concern for wetland management led to the convocation of a symposium on waterbird and shorebird use of natural and man-modified...
Analysis of cyanide in whole blood of dosed cathartids
A. J. Krynitsky, Stanley N. Wiemeyer, E. F. Hill, J. W. Carpenter
1986, Environmental Toxicology and Chemistry (5) 787-789
A gas-liquid chromatographic method was modified to quantify both unmetabolized (“free”) and metabolized (“bound”, i.e., thiocyanates) cyanides. The methods for both are efficient and sensitive to 0.05 ppm. Repeated freezing and thawing of whole blood from treated cathartids caused an initial increase in free cyanide concentrations, followed by a gradual...
Effects of body weight and age on the time and pairing of American black ducks
Gary R. Hepp
1986, The Auk (103) 477-484
I used captive young and adult American Black Ducks (Anas rubripes) during October-February 1984-1985 to test whether body weight and age affected time of pair-bond formation. Eighty ducks were marked individually, and 10 ducks (6 males and 4 females, half of each age class) were assigned to each of 8...
Radiotelemetry locates wintering grounds of DDE-contaminated black-crowned night-herons
Charles J. Henny, L. J. Blus
1986, Wildlife Society Bulletin (14) 236-241
This study was designed to determine if night-herons nesting at Ruby Lake, Nevada, shared a common wintering area with lesser contaminated night-herons nesting farther north in Oregon and Idaho. Radiotelemetry (29 transmitters) and banding studies indicated that the lesser-contaminated Oregon-Idaho night-herons wintered primarily in coastal Mexico (mean 22-23'N latitude), while...
Potential impacts of agricultural chemicals on waterfowl and other wildlife inhabiting prairie wetlands: An evaluation of research needs and approaches
C.E. Grue, L.R. DeWeese, P. Mineau, G.A. Swanson, J.R. Foster, P.M. Arnold, J.N. Huckins, P.J. Sheenan, W.K. Marshall, A.P. Ludden
1986, Transactions of the North American Wildlife and Natural Resources Conference (51) 357-383
The potential for agricultural chemicals to enter prairie-pothole wetlands and impact wildlife dependent on these wetlands for survival and reproduction appears to be great. However, the actual risk to wetland wildlife from the inputs of these chemicals cannot be adequately assessed at this time, because of insufficient data. Available data...
On the use of enumeration estimators for interspecific comparisons with comments on a 'trappability' estimator
J.D. Nichols
1986, Journal of Mammalogy (67) 590-593
No abstract available....
Antibodies against canine parvovirus of wolves of Minnesota: A serologic study from 1975 through 1985
S.M. Goyal, L.D. Mech, R.A. Rademacher, M.A. Khan, U.S. Seal
1986, Journal of the American Veterinary Medical Association (189) 1092-1094
Serum samples (n = 137) from 47 wild wolves (Canis lupus; 21 pups and 26 adults) were evaluated from 1975 to 1985 for antibodies against canine parvovirus, using the hemagglutination inhibition (HI) test. In addition, several blood samples (n = 35) from 14 of these wolves (6 pups and 8...
An overview of raptor conservation in Latin America
D. H. Ellis, D.G. Smith
1986, Birds of Prey Bulletin (3) 21-25
Prior to the last decade, biological studies of raptorial birds in Latin America were almost nonexistent. For many species little more was known than their general range and habitat type. The last few years have seen the opening of a door to what will surely be a flood of scientific...
Trap-related injuries to gray wolves in Minnesota
David W. Kuehn, Todd K. Fuller, L. David Mech, William J. Paul, Steven H. Fritts, William E. Berg
1986, Journal of Wildlife Management (50) 90-91
Gray wolves (Canis lupus) captured in traps with toothed jaws offset 1.8 cm incurred fewer injuries than those captured in 3 other types of steel traps. Few wolves seriously damaged canine or carnassial teeth while in traps....
Seasonal influence of nutrients on the physiology and behavior of captive canvasbacks (Aythya valisineria)
Matthew C. Perry
1986, Dissertation Abstracts International (46B) 3291 (abs)
Captive canvasbacks (Aythya valisineria) were maintained ad libitum on five diets during the winters of 1978-79 and 1979-80 to evaluate the effects of varying protein and energy levels on feed intake and condition. Diets were formulated to simulate either a natural diet high in invertebrates or one high in vegetation....
Effects of environmental contaminants on snapping turtles of a tidal wetland
P.H. Albers, L. Sileo, B.M. Mulhern
1986, Archives of Environmental Contamination and Toxicology (15) 39-49
Snapping turtles (Chelydra serpentina) were collected from a brackish-water and a nearly freshwater area in the contaminated Hackensack Meadowlands of New Jersey and an uncontaminated freshwater area in Maryland to determine the effects of environmental contaminants on a resident wetland species. No turtles were observed or caught in the Meadowlands...
