Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16786
The holotype of Natalus stramineus Gray (Mammalia: Chiroptera, Natalidae)
No abstract available.
Authors
C.D. Handley, A.L. Gardner
Western grebe, Aechmophorus occidentalis, wintering biology and contaminant accumulation in Commencement Bay, Puget Sound, Washington
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 to accumulate even higher levels of certain contaminants becau
Authors
C. J. Henny, L. J. Blus, R. A. Grove
Comparison of breaking strength and shell thickness as evaluators of white-faced ibis eggshell quality
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, hereafter referred to as DDE. Eggs from 80 nests (one egg/nest
Authors
C. J. Henny, J.K. Bennett
Estimating population parameters for geese from band-recovery and mark-recapture data
No abstract available.
Authors
J.B. Hestbeck, D. H. Rusch, R.A. Malecki
First nest record of the least bittern in Wyoming
No abstract available.
Authors
R. A. Grove, C. J. Henny
Avoidance of selenium-treated food by mallards
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 response, probably to illness caused by the selenium and not to an aversion to the taste of the sele
Authors
G. H. Heinz, C. J. Sanderson
North-south gradient in survival rates in midcontinental populations of mallards
I used band recovery data to test for the existence of a north-south gradient in survival and recovery rates for midcontinental populations of mallards (Anas platyrhynchos) during 3 time periods (1962-70, 1971-78, 1979-84). Mean annual survival rates for adult males and females were significantly associated with mean banding latitude (P < 0.0001 and P < 0.0004, respectively) and time period (P <
Authors
J.B. Hestbeck
Accumulation, metabolism and toxicity of parathion in tadpoles
No abstract available.
Authors
R.J. Hall
Effects of boron on growth and physiology in mallard ducklings
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 termination, blood and tissue samples were collected for biochem
Authors
D. J. Hoffman, M.B. Camardese, L. J. LeCaptain, G.W. Pendleton
Wintering localities of Cooper's hawks nesting in northeastern Oregon
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 near Zihuatanejo, Guerrero, Mexico on November, 12, 1977, is one of the southernmo
Authors
C. J. Henny
Eggshell thinning and contaminant levels in bald eagle eggs from Arizona, 1977 to 1985
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. Eleven eggs analyzed for contaminants contained slightly elevated concentrations of DDE (3.3pm
Authors
T.G. Grubb, Stanley N. Wiemeyer, L.F. Kiff