| Titre : | Journal of Field Ornithology 71(2) - SPR 2000 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
K. M. Dugger, Auteur ;
M. R. Ryan, Auteur ;
R. B. Renken, Auteur
Accurate population models for the endangered Interior Least Tern (Sterna antillarum) cannot be generated without;age-specific survival estimates. Our purpose was to estimate chick survival from hatching to fledging, for Least Terns nesting at t[...]
Article
D. F. Sherony, Auteur ;
B. M. Ewald, Auteur ;
S. Kelling, Auteur
Lake Ontario is the only Great Lake where a significant number of Red-throated Loons are seen during fall migration. Observations from Hamlin Bench State Park, New York during fall months, 1993-1997, were used to analyze their movements. Annuall[...]
Article
P. A. Buckley, Auteur ;
F. G. Buckley, Auteur
Nearly all previous studies of saltmarsh-nesting Common Terns on the east coast of the United States have concluded that tidal saltmarshes were suboptimal or marginal breeding habitats. Questioning that conclusion, we analyzed patterns of both s[...]
Article
R. D. Quintana, Auteur ;
A. Travaini, Auteur
We investigated nest-site selection of sympatrically breeding skuas (Catharacta spp.) and Kelp Gulls (Larus dominicanus) in the Antarctic Peninsula. We evaluated habitat preferences of nesting skuas and gulls in a patchy landscape by counting th[...]
Article
R. R. Wilson, Auteur ;
D. J. Twedt, Auteur ;
A. B. Elliott, Auteur
We compared the efficacy of 400-m line transects and sets of three point counts at detecting avian richness and abundance in bottomland hardwood forests and intensively managed cottonwood (Populus deltoides) plantations within the Mississippi Al[...]
Article
P. LLoyd, Auteur ;
R. M. Little, Auteur ;
T. M. Crowe, Auteur
We examined whether regular researcher Visits affected egg hatchability or nest predation for three ground-nesting bird species that incur high levels of nest predation, primarily by small mammals. Frequently Visited finch-lark (Eremopserix vert[...]
Article
C. R. Blem, Auteur ;
L. B. Blem, Auteur
At Flathead Lake Biological Station in western Montana, Violet-green Swallows (Tachycineta thalassina) sunbathed during a restricted period and under specific meteorological conditions in an apparent attempt to rid themselves of ectoparasites. S[...]
Article
D. A. Zegers, Auteur ;
S. May, Auteur ;
L. J. Goodrich, Auteur
Using cameras at artificial ground nests we found no major quantitative differences in species richness or the relative abundance of nest predators photographed in farm/forest edge and forest-interior sites at five locations in eastern Pennsylva[...]
Article
R. J. Fletcher, Auteur ;
J. A. Dhundale, Auteur ;
T. F. Dean, Auteur
Surveying birds during the non-breeding season in prairie environments can be difficult because birds are less visible and vocal during this period than they are during the breeding season. We compared the effectiveness of using fixed-radius poi[...]
Article
From 1992 to 1997, I monitored population size and productivity of Ospreys (Pandion haliaetus) nesting along 80 km of coast on the eastern side of the Gulf of California, Mexico. During the study period, the number of nesting pairs increased by [...]
Article
K. Winker, Auteur
The scientific value of avian research specimens is immense, but the accumulation rate of this resource is too low to meet either present or future needs. This may be due, in part, to the fact that few students are currently being taught to prep[...]
Article
P. Deviche, Auteur
The timing, pattern, and extent of the first prebasic wing molt of White-winged Crossbills (Loxia leucoptera) were determined during a 6-yr banding study in interior Alaska. Hatching-year birds were not caught in substantial numbers until May, a[...]
Article
T. R. Mills, Auteur ;
M. A. Rumble, Auteur ;
L. D. Flake, Auteur
Birds with both eastern and western distributions occur in the Black Hills of western South Dakota. This forest is mostly ponderosa pine (Pinus ponderosa) and is managed for timber. Logging alters forest characteristics and the bird community. W[...]
