| Titre : | Journal of Field Ornithology 71(3) - SUM 2000 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
M. O. Wiebe, Auteur ;
J. E. Hines, Auteur ;
G. J. Robertson, Auteur
Not accounting for collar loss when using observations of collared geese to estimate survival can result in an underestimation of the survival rates and a loss of precision. As part of a study of goose populations in the Western Canadian Arctic,[...]
Article
J. B. Joy, Auteur
From May through July 1997 and 1998, I quantified nest tree and cavity characteristics of 32 Red-breasted Sapsucker (Sphyrapicus ruber) nests in the high-elevation coastal forests of northern Vancouver Island, British Columbia. Nests were locate[...]
Article
J. T. Pelayo, Auteur ;
R. G. Clark, Auteur
Researchers often use nasal saddles or discs to identify individuals in studies of waterfowl ecology, but previous studies showed that these markers may have detrimental effects on reproductive behavior and success of Ruddy Ducks (Oxyura jamaice[...]
Article
J. S. Gunn, Auteur ;
A. Desrochers, Auteur ;
M. A. Villard, Auteur ;
J. Bourque, Auteur ;
J. Ibarzabal, Auteur
Community-level indices of reproductive success are useful for measuring or monitoring demographic effects of habitat alteration on birds. We present a time-efficient method to estimate the relative reproductive activity of the forest songbird c[...]
Article
C. P. Dau, Auteur ;
P. L. Flint, Auteur ;
M. R. Petersen, Auteur
Molting adult Steller's Elders (Polysticta stelleri) were banded at Izembek Lagoon (1961-1998) and Nelson Lagoon (1995-1997) along the lower Alaska Peninsula to determine breeding distribution and movements. Of 52,985 Steller's Elders banded, 34[...]
Article
J. W. Rivers, Auteur ;
D. E. Kroodsma, Auteur
Despite the Hermit Thrush's wide distribution and exceptional singing ability, its vocal behavior is poorly known. In recorded samples from Arizona and New England, we show that males have repertoires of 6 to 12 discrete song types. Those types [...]
Article
J. C. Ortega, Auteur ;
C. P. Ortega, Auteur
We studied the effects of brood parasitism by Brown-headed Cowbirds (Molothrus ater) and predators on the reproductive biology of Yellow Warblers (Dendroica petechia) in La Plata County, Colorado, 1992-1996. Overall, 36.4% of Yellow Warbler nest[...]
Article
K. J. Popper, Auteur ;
M. A. Stern, Auteur
From 1995-1998 we studied the breeding ecology of Yellow Rails (Coturnicops noveboracensis) in southcentral Oregon. We found 34 Yellow Rail nests; 26 had either hatched or failed when found, and eight were active (seven of these hatched). These [...]
Article
M. J. Lovallo, Auteur ;
D. S. Klute, Auteur ;
G. L. Storm, Auteur ;
W. M. Tzilkowski, Auteur
We report on the use of alternate drumming sites by male Ruffed Grouse (Bonasa umbellus) during 1976-1997 within activity centers in a managed and an unmanaged forest in central Pennsylvania. Density of drumming males ranged from 1.6-12.5 males/[...]
Article
Brigitte Poulin, Auteur ;
Gaëtan Lefebvre, Auteur ;
P. Pilard, Auteur
Data collected in a 40-ha reedbed of southers France were used to compare the efficiency and limitation of mist-net and point-count techniques in estimating the composition and structure of a bird assemblage dominated by the Bearded Tit (Panurus[...]
Article
L. S. Johnson, Auteur ;
J. Wise, Auteur
We analyzed 2426 records of recoveries of banded House Wrens (Troglodytes aedon) to identify wintering sites of individuals coming from different parts of this species' broad North American breeding range. Records suggest that most birds breedin[...]
Article
C. Farmer, Auteur ;
M. A. Holmgren, Auteur
We describe sexual dichromatism in the plumage of juvenile Brown-headed Cowbirds (Molothrus ater obscurus) collected in Ventura County, California in 1991. The dichromatism was based on two colorimetric features. The first was the contrast betwe[...]
Article
E. S. Morton, Auteur ;
B. J. M. Stutchbury, Auteur
Demographic data are presented from an 8-yr study of a marked population of the Dusky Antbird (Cercomacra tyrannina), a sedentary neotropical passerine with year-long territories and pairbonds. Dusky Antbirds had an annual survival rate of 82%, [...]
Article
T. Alworth, Auteur ;
I. B. R. Scheiber, Auteur
Nest building by House Wrens (Troglodytes aedon) has been described as occurring in two stages. Males arrive on territories before females and begin the first stage by building a stick foundation in a suitable cavity. In the second stage, female[...]
Article
T. E. Morrell, Auteur ;
S. M. Aquilani, Auteur
We examined nest sites of Red-tailed Tropicbirds (Phaethon rubricauda) on Rose Island of the Rose Atoll National Wildlife Refuge, American Samoa, to determine habitat features important for nest-site selection of this species. We quantified habi[...]
Article
H. C. Mueller, Auteur ;
N. S. Mueller, Auteur ;
D. D. Berger, Auteur ;
G. Allez, Auteur ;
W. G. Robichaud, Auteur ;
J. L. Kaspar, Auteur
We trapped Sharp-shinned Hawks (Accipiter striatus) during fall migration, using House Sparrows (Passer domesticus), European Starlings (Sturnus vulgaris), and Ringed Turtle Doves (Streptopelia risoria) as lures. Adults and males initiated attac[...]
Article
W. Post, Auteur ;
C. A. Seals, Auteur
For six years we examined the reproductive biology of Common Moorhens (Gallinula chloropus) nesting in an impounded cattail (Typha spp.) marsh in South Carolina, USA. The egg-laying period averaged 78 days. Most (52%) of 82 nests were started in[...]
Article
Obligate brood parasitic birds may improve their reproductive success if they cause the failure of nests that they had not parasitized, because many host species renest soon after failed nesting attempts and replacement nests may be available fo[...]
Article
C. B. Dabbert, Auteur ;
T. E. Martin, Auteur
Loss of wetlands to agriculture and development negatively impacts waterfowl. Greentree reservoirs are forested tracts that are purposefully flooded to increase hunting opportunities for sportsman and to provide shelter for waterfowl such as Mal[...]
Article
S. J. Dougill, Auteur ;
L. Johnson, Auteur ;
P. C. Banko, Auteur ;
D. M. Goltz, Auteur ;
M. R. Wiley, Auteur ;
J. D. Semones, Auteur
Entanglement and mortality of Palila (Loxioides bailleui), an endangered Hawaiian honeycreeper, occurred when birds were radio-tagged with transmitters equipped with a long, limp, solder-tipped antenna. Birds were found suspended in trees by the[...]
Article
M. S. Rodway, Auteur ;
H. M. Regehr, Auteur
Survey stations to measure Marbled Murrelet (Brachyramphus marmoratus) activity in low-elevation forest are often preferentially placed on stream channels because they provide wide visibility and the greatest chances of visually detecting birds [...]
