Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16784
The sea birds of Culebra and its adjacent islands, Puerto Rico
No abstract available.
Authors
C.B. Kepler, A.K. Kepler
Standard abbreviations for common names of birds
No abstract available.
Authors
M. K. Klimkiewicz, C.S. Robbins
Observations and reinterpretation of kingfisher-raptor interactions
Reported observations of Belted Kingfisher (Megaceryle alcyon)-raptor interactions have ranged from brief encounters where the kingfisher escaped the raptor and the hawk subsequently flew away to repeated chases (Johnson 1925, McCabe and McCabe 1928, Skinner 1928, Smith 1963). In some repetitive chases, kingfishers appeared to initiate the interaction (McCabe and McCabe 1928, Skinner 1928).
Authors
Ronald E. Kirby, Mark R. Fuller
A white-tailed kite breeding record for Oregon
No abstract available.
Authors
Charles J. Henny, John T. Annear
Osprey distribution, abundance, and status in western North America: II. The Oregon population
An estimated 308 ? 23 pairs of Ospreys nested in the survey area in Oregon in 1976. Major concentration centers include Crane Prairie Reservoir and the adjacent Deschutes National Forest, the coastal lakes and reservoirs between Florence and North Bend, the Rogue River, the Lane County reservoirs, and the Umpqua River. An estimated 47 percent of the Oregon population is nesting at reservoirs. Limi
Authors
C. J. Henny, J.A. Collins, W.J. Deibert
Toxicity of experimental lead-iron shot versus commercial lead shot in mallards
The toxicity of an experimental lead-iron shot containing 38.1 percent lead was compared with commercial lead shot in mallard ducks (Anas platyrhynchos) fed corn for 14 weeks. Significantly higher mortality occurred in ducks dosed with commercial lead shot compared to ducks given lead-iron shot containing comparable amounts of lead. Loss of body weight was indicative of the difference in toxicity
Authors
Mack T. Finley, Michael P. Dieter
Survival and reproductive success of black ducks fed methyl mercury
A diet containing 3 ppm mercury was fed to black ducks (Anas rubripes) for periods of 28 weeks during two consecutive breeding seasons. Clutch size, egg production, number of eggs incubated, hatchability and survival of ducklings were lower during both years in hens fed mercury. Reduced hatchability and poor duckling survival were the most harmful effects. During 2 years, 13 pairs of breeders fed
Authors
M. T. Finley, R.C. Stendell
Toxaphene does not affect avoidance behavior of young black ducks
No abstract available.
Authors
G. H. Heinz, M. T. Finley
Coccidia of whooping cranes
Coccidial oocysts were observed in 6 of 19 fecal samples from free-ranging whooping cranes (Grus americana) and 4 of 16 samples from captive whooping cranes. Eimeria gruis occurred in four free-ranging whooping cranes and E. reichenowi in two free-ranging and two captive whooping cranes. Fecal samples from two captive cranes contained oocysts of Isospora lacazei which was considered a spurious par
Authors
Donald J. Forrester, J. W. Carpenter, D.R. Blankinship