C. B. Kepler, A.K. Kepler, T.R. Simons, B. Hobdy, P.M. Simons
1990, 'Elepaio (50) 75-81
No abstract available....
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Publication Extents
Not all publications have extents, not all extents are completely accurateD.G. Krementz, G.W. Pendleton
1990, Condor (92) 500-507
Fat scoring is a widely used nondestructive method of assessing total body fat in birds. This method has not been rigorously investigated. We investigated inter- and intraobserver variability in scoring as well as the predictive ability of fat scoring using five species of passerines. Between-observer variation in scoring was...
M.E. Nelson, L.D. Mech
1990, Journal of Mammalogy (71) 689-691
No abstract available....
Charles J. Henny, J.K. Bennett
1990, Environmental Toxicology and Chemistry (9) 797-805
Data from a 1986 field study of white-faced ibis (Plegadis chihi) nesting at Carson Lake, Nevada, were used to compare the utility of eggshell strength measurement and eggshell thickness as indicators of eggshell quality. The ibis population had a history of reproductive failure correlated with elevated egg concentrations of p, p'-DDE,...
R. A. Grove, Charles J. Henny
1990, Northwestern Naturalist (71) 12-14
G. H. Heinz, C. J. Sanderson
1990, Environmental Toxicology and Chemistry (9) 1155-1158
Adult, male mallards (Anas platyrhynchos) were given a choice between a control diet and a diet containing 5, 10 or 20 ppm selenium as selenomethionine dissolved in water and mixed into the diet. At 10 and 20 ppm, selenium-treated diets were avoided. Avoidance appeared to be caused by a conditioned...
C.D. Handley Jr., A. L. Gardner
1990, Proceedings of the Biological Society of Washington (103) 966-972
R.J. Hall
1990, Bulletin of Environmental Contamination and Toxicology (44) 629-635
No abstract available....
D. J. Hoffman, M.B. Camardese, L. J. LeCaptain, G.W. Pendleton
1990, Environmental Toxicology and Chemistry (9) 335-346
High concentrations of boron (B) have been associated with irrigation drainwater and aquatic plants consumed by waterfowl. Day-old mallard (Anas platyrhynchos) ducklings received an untreated diet (controls) or diets containing 100, 400 or 1,600 ppm B as boric acid. Survival, growth and food consumption were measured for 10 weeks. At...
Charles J. Henny
1990, Journal of Field Ornithology (61) 104-107
The life span of the Cooper's Hawks banded between 1974 and 1979 is now believed completed. The band recoveries provide the first information on the migratory characteristics of the species in the Pacific Northwest. Cooper's Hawks nesting in northeastern Oregon winter in western Mexico. The second-year female shot...
Charles J. Henny, L. J. Blus, R. A. Grove
1990, Canadian Field-Naturalist (104) 460-472
Western Grebes wintering at the head of Commencement Bay (bordering the waterways) accumulated significant amounts of mercury, arsenic, DDE, PCBs, chlordanes, and perhaps cadmium and HCB between 17 October 1985 and 6 February 1986. No change in selenium or lead was detected, but copper declined significantly. Western Grebes were likely...
J.B. Hestbeck, D. H. Rusch, R.A. Malecki
1990, Transactions of the North American Wildlife and Natural Resources Conference (55) 350-373
T.G. Grubb, Stanley N. Wiemeyer, L.F. Kiff
1990, Southwestern Naturalist (35) 298-301
The mean eggshell thickness of 11 eggs of bald eagles (Haliaeetus leuccocephalus) and 21 samples of eggshell fragments (n = 32) collected from 14 nests in Arizona during 1977 to 1985 was 0.539 mm, 8.8% thinner than the pre-1947 (pre-DDT) mean for eggs from southern California and Baja California, Mexico....
Catherine Frazer, J. R. Longcore, D.G. McAuley
1990, Canadian Journal of Zoology (68) 1288-1291
We monitored the movements of 97 female and 15 male juvenile American black ducks (Anas rubripes) in the vicinity of Moosehorn National Wildlife Refuge in eastern Maine and southwestern New Brunswick from September through mid- December, 1985-1987.. Movements were described by estimating home ranges and radial movements from the primary...
A. L. Gardner, C.S. Ferrell
1990, Proceedings of the Biological Society of Washington (103) 501-508
C.S. Robbins
1990, Environmental Pollution (65) 142
Small mammals were trapped, tagged and recaptured in 0?45 ha plots at six hazardous industrial waste disposal sites to determine if populations, body mass and age structures were different from paired control site plots. Low numbers of six species of small mammals were captured on industrial waste sites or control...
Thomas H. Fritts, Michael J. McCoid, R.L. Haddock
1990, American Journal of Tropical Medicine and Hygiene (42) 607-611
The brown tree snake, Boiga irregularis, is abundant on Guam and commonly invades human habitations. Data on emergency room visits on Guam document a high freguency of snakebites on Guam. Over 50% of the emergency room visits for snakebite involved children <4 years old. Records exist of 4 infants, 1, 2,...
M.S. Foster
1990, Condor (92) 844-854
The rates at which birds visit fruiting individuals of Allophylus edulis (Sapindaceae) differ substantially among trees. Such avian feeding preferences are well-known, but usually involve fruits and trees of different species. Factors controlling avian preferences for particular trees in a population of conspecifics are generally undocumented. To address this issue,...
M.S. Foster, P. Cannell
1990, Condor (92) 277-283
As governments impose increasingly stringent regulations on the collection of bird specimens and as man alters ever greater areas of habitat with the loss of many of their contained species, museum specimens increase immeasurably in importance. Yet at present, museum collections do not contain an adequate representation of the...
R. Greenberg, Sam Droege
1990, Condor (92) 393-404
The Coastal Plain Swamp Sparrow (Melospiza georgiana nigrescens) was originally described from a small number of specimens from the tidal marshes of the Nanticoke River in southeastern Maryland. Based on our quantitative analysis of a larger series of specimens, we found that Swamp Sparrows collected during the breeding season...
R. B. Clapp, William L. Schipper
1990, 'Elepaio (50) 11-14
No abstract available....
J.E. Cadle, R.W. McDiarmid
1990, Proceedings of the Biological Society of Washington (103) 746-768
P.O. Class, J.D. Reichel, T.O. Lemke, R. B. Clapp, G.J. Wiles, D.T. Aldan, T.K. Pratt
1990, Micronesica (23) 67-89
R.B. Cocroft, R.W. McDiarmid, A.P. Jaslow, P.M. Ruiz-Carranza
1990, Copeia (1990) 631-643
Vocalizations of frogs of the genus Atelopus include three discrete types of signals: pulsed calls, pure tone calls, and short calls. Repertoire composition is conservative across species. Repertoires of most species whose calls have been recorded contain two or three of these identifiable call types. Within a call type, details...
R.M. Erwin
1990, Colonial Waterbirds (13) 70-71
Discrepancies appear in the literature concerning the influence of time of day and tide on feeding activities of Black Skimmers (Rhynchops niger). Observations from Guyana, South America, suggest that skimmers do feed during the day, but are strongly cued to receding tides....