Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16782
Blood delta-aminolevulinic acid dehydratase (ALAD) to monitor lead contamination in canvasback ducks (Aythya valisineria)
No abstract available.
Authors
M. P. Dieter
Chlordane in birds: A study of lethal residues and loss rates
Lethal residues of heptachlor epoxide in brains of birds fed heptachlor ranged from 9 to 27 ppm wet weight; residues of oxychlordane in birds fed oxychlordane ranged from 6 to 16 ppm; both were diagnostically distinct from those in equally exposed survivors. In birds fed chlordane, brains of those that died contained less than 30% of these amounts but also contained trans-nonachlor, compound C, an
Authors
L. F. Stickel, W. H. Stickel, R.D. McArthur, D.L. Hughes
Endrin in birds: Lethal residues and secondary poisoning
Endrin residues in brains that are diagnostic of death were determined for several species of birds. Residues of 0.8 ppm or more of endrin in brain meant death; 0.6 ppm or less meant survival; between was a zone of overlap. These criteria indicate that some wild birds of the U.S., particularly white pelicans in the Northwest and two bald eagles, have been killed by endrin. Signs of endrin poison
Authors
W. H. Stickel, W. L. Reichel, D.L. Hughes
Brain cholinesterase activities of passerine birds in forests sprayed with cholinesterase inhibiting insecticides
Brain cholinesterase activities were determined in passerines collected from northwestern forests that had been sprayed with trichlorfon, acephate, and carbaryl at 0.56, 1.13 and 2.26 kg/ha. Trichlorfon and carbaryl inhibited cholinesterase activity slightly in only a few birds, primarily canopy dwellers. In contrast, acephate caused marked inhibition of cholinesterase activity in nearly all bir
Authors
J.G. Zinkl, C. J. Henny, P.J. Shea
An outline of the treatment and control of crane parasites
No abstract available.
Authors
J. W. Carpenter
Artificial insemination of cranes with frozen semen
For the first time (1978) artificial insemination (AI) with frozen greater sandhill crane (Grus canadensis tabida) semen resulted in fertile eggs and chicks. During the 2 year (1977-78) study, 6 of 27 eggs produced were fertile. Three chicks hatched. Semen samples used for insemination were frozen and stored in liquid nitrogen for two months or less. Recent improvements in the laboratory indicated
Authors
G.F. Gee, T.J. Sexton
Estimating population densities from variable circular plot surveys
No abstract available.
Authors
F.L. Ramsey, J. M. Scott
The role of the U.S. Fish and Wildlife Service in managing nongame birds
No abstract available.
Authors
S.H. Anderson