Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16785
Dicrotophos poisoning of great-tailed grackles in Texas
No abstract available.
Authors
C. A. Mitchell, D. H. White, E. J. Kolbe, R.C. Biever
Effects of permanent trap response in capture probability on Jolly-Seber capture-recapture model estimates
The authors examine bias in Jolly-Seber estimates of survival rate and population size resulting from permanent trap response in capture probability.
Authors
J. D. Nichols, J. E. Hines, K. H. Pollock
Organochlorine residues in three heron species as related to diet and age
No abstract available.
Authors
K. R. Niethammer, T.S. Baskett, D. H. White
Observer visitation frequency and success of mourning dove nests: A field experiment
Field studies of nesting success generally require visits by the investigator to the nests under study. Such visits may themselves influence nesting success, however, and this possibility has been discussed and investigated by a number of workers with a variety of bird species. Livezey (1980) reviewed the relevant literature for duck nests and noted that most studies failed to demonstrate differen
Authors
J. D. Nichols, H.F. Percival, R.A. Coon, M.J. Conroy, Gary L. Hensler, J. E. Hines
Contaminant concentrations in manatees in Florida
The status of the endangered manatee (Trichehus manatus) in relation to organochlorine pesticides, polychlorinated biphenyls, mercury, lead, cadmium, copper, iron, and selenium was investigated in Florida from 1977 to 1981. Concentrations of organochlorines in blubber, mercury in muscle and liver, lead in liver, and lead and cadmium in kidneys did not indicate high exposure to these contaminants.
Authors
T. J. O'Shea, John F. Moore, H. I. Kochman
Twin embryos in a peregrine falcon egg
No abstract available.
Authors
O. H. Pattee, W.G. Mattox, W.S. Seegar
The Pan American Shorebird Program: A Progress Report
No abstract available.
Authors
J.P. Myers, G. Castro, B. Harrington, M. Howe, J. Maron, E. Ortiz, M. Sallaberry, C.T. Schick, E. Tablio
Inheritance patterns of enzymes and serum proteins of mallard-black duck hybrids
From 1974 to 1976, a breeding program was used to produce hybrids of black ducks and mallards for the evaluation of inheritance patterns of serum proteins and serum, liver and muscle enzymes. In addition to the crosses designed to produce hybrids, a series of matings in 1975 and 1976 were designed to evaluate inheritance patterns of a hybrid with either a black duck or mallard. At the F1 level,
Authors
R.P. Morgan, D. W. Meritt, S. B. Block, M.A. Cole, S. T. Sulkin, F.B. Lee, C. J. Henny
Organochlorine residues in eggs of black-crowned night herons from Colorado and Wyoming
Eggs of black-crowned night-herons Nycticorax nycticorax (L.) were collected for analysis from seven nesting sites in Colorado and Wyoming in 1979. One egg was taken per nest from as many as 20 nests per site during early incubation. The nests were marked and revisited after hatching, but before fledging, to record the number of live young. DDE was detected in all of the collected eggs (total 147)
Authors
L. C. McEwen, C. J. Stafford, Gary L. Hensler
The use of auxiliary variables in capture-recapture and removal experiments
The dependence of animal capture probabilities on auxiliary variables is an important practical problem which has not been considered in the development of estimation procedures for capture-recapture and removal experiments. In this paper the linear logistic binary regression model is used to relate the probability of capture to continuous auxiliary variables. The auxiliary variables could be en
Authors
K. H. Pollock, J. E. Hines, J. D. Nichols
Changes in levels of organochlorines in woodcock wings from 1971 to 1975
Wings from woodcock (Philohela minor) were first monitored for organochlorine pesticides and polychlorinated biphenyls (PCBs) in the eastern U.S. in 1971. Regional differences in these compounds were clearly demonstrated and baseline residue levels were obtained for later comparisons. An expanded sampling of wings in 1972 revealed that residues in wings of adult woodcock may differ significantly f
Authors
M. A. R. McLane, D.L. Hughes, G. H. Heinz
Effects of egg oiling on larid productivity and population dynamics
Small quantities of petroleum may adhere to the plumage, feet, or nest materials of breeding birds and be transferred to their eggs during incubation. In this study, oil was applied to naturally incubated Great Black-backed Gull (Larus marinus) and Herring Gull (L. argentatus) eggs, and its effects on reproductive success were assessed. Embryo survival was inversely proportional to the quantity of
Authors
S.J. Lewis, R.A. Malecki