Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16966
A new species of a giant Thomasomys (Mammalia, Muridae, Sigmodontinae) from the Andes of north-central Per? A new species of a giant Thomasomys (Mammalia, Muridae, Sigmodontinae) from the Andes of north-central Per?
No abstract available.
Authors
L.M. Leo, A. L. Gardner
A new Thomasomys (Mammalia: Rodentia) from the Peruvian Andes A new Thomasomys (Mammalia: Rodentia) from the Peruvian Andes
No abstract available.
Authors
A. L. Gardner, M. Romo
The tools of the trade--library enhancement in developing countries The tools of the trade--library enhancement in developing countries
No abstract available.
Authors
M.S. Foster, M.A. Jenkinson, A. Allen
Research, conservation, and collaboration: The role of visiting scientists in developing countries Research, conservation, and collaboration: The role of visiting scientists in developing countries
As awareness of environmental problems and the need to protect our natural resources or use them wisely has grown, scientists have become increasingly interested in conservation. Some individuals are involved in conservation-related activities through research or teaching, but most of us participate only as citizens concerned about the world in which we live. Often, we decline to take an...
Authors
Mercedes S. Foster
Sex and age identification of palila Sex and age identification of palila
Methods to sex and age Palila (Loxioides bailleui), an endangered Hawaiian finch restricted to subalpine woodlands on Hawai'i, were identified on the basis of measurements and plumage characteristics of 17 museum specimens and 96 known-age, live Palila. Palila undergo a single annual molt during September-December following the breeding season. Presence of a complete or partial wingbar
Authors
J.J. Jeffrey, S.G. Fancy, G.D. Lindsey, P.C. Banko, T.K. Pratt, J.D. Jacobi
Effects of habitat availability on dispersion of a stream cyprinid Effects of habitat availability on dispersion of a stream cyprinid
We analyzed temporal changes in the dispersion of the rosyside dace,Clinostomus funduloides, (family Cyprinidae) in a headwater stream, to assess the role of habitat availability in promoting fish aggregation. The dace foraged alone and in groups of up to about 25 individuals, and dispersion varied significantly among monthly censuses conducted from May through December. In two of three...
Authors
Mary C. Freeman, Gary D. Grossman
Social foraging classes in raptorial birds Social foraging classes in raptorial birds
No abstract available.
Authors
D. H. Ellis, J.C. Bednarz, D.G. Smith, S.P. Flemming
Overwinter survival of mallards fed selenium Overwinter survival of mallards fed selenium
Adult male mallards (Anas platyrhynchos) were fed diets supplemented with 0, 10, 20, 40, or 80 μg/g selenium in the form of selenomethionine. Mortality in each of these treatments was 0, 0, 25, 95, and 100%, respectively, during a 16-week exposure that started in November. After one week of treatment, body weights were significantly depressed by the 20, 40, and 80-μg/g selenium...
Authors
Gary Heinz, M. A. Fitzgerald
Biomarkers of contaminant exposure in common terns and black-crowned night herons in the Great Lakes Biomarkers of contaminant exposure in common terns and black-crowned night herons in the Great Lakes
Morphological and biochemical indexes of contaminant exposure were examined in hatching common terns (Sterna hirundo) and black-crowned night herons (Nycticorax nycticorax) from industrialized and nonindustrialized locations in the Great Lakes. In 1984, naturally incubated, pipping common tern and black-crowned night heron embryos collected from industrialized locations exhibited smaller...
Authors
D. J. Hoffman, G. J. Smith, Barnett A. Rattner
The reintroduction of the Andean condor into Colombia, South America: 1989-1991 The reintroduction of the Andean condor into Colombia, South America: 1989-1991
From 1989 to 1991,22 captive-reared Andean condors Vultur gryphus were released into three protected areas in the Andes of Colombia, South America. The goals of this reintroduction programme were to re-establish populations of these birds in protected habitat where the species had been extirpated, and to train local biologists in the conservation techniques necessary to recover their...
Authors
A. Lieberman, J.V. Rodriguez, J.M. Paez, J. W. Wiley
Recent distribution and status of nesting bald eagles in Baja California, Mexico Recent distribution and status of nesting bald eagles in Baja California, Mexico
We studied Bald Eagles(Haliaeetus leucocephalus) nesting in Baja California, Mexico, and vicinity from 1983-1993. The range of nesting Bald Eagles in Baja California has been reduced from a scattering of pairs along both the Pacific and Gulf sides to a remnant population in Magdalena Bay where no more than three pairs were found annually. Low numbers and a restricted distribution make...
Authors
Charles J. Henny, B. Conant, D. W. Anderson
'Tool' use by the red-tailed hawk (Buteo jamaicensis) 'Tool' use by the red-tailed hawk (Buteo jamaicensis)
Perhaps the best documented example of regular tool use for a falconiform is the Egyptian Vulture (Neophron percnopterus) striking an Ostrich (Struthio camelus) egg with a stone (J. van Lawick-Goodall and H. van Lawick-Goodall 1966, Nature 212:1468-1469; R.K. Brooke 1979, Ostrich 50:257-258). Another species, the Lammergeier (Gypaetus barbatus), routinely drops bones on stone slabs to...
Authors
David H. Ellis, Shawn Brunson