| Titre : | Journal of Field Ornithology 71(4) - FAL 2000 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
G. L. Sprandel, Auteur ;
J. A. Gore, Auteur ;
D. T. Cobb, Auteur
We used aerial surveys and reports from experienced birders and biologists to identify potentially important sites for wintering shorebirds in coastal Florida. We visited 273 sites in November and December 1993 to assess use by shorebirds and, b[...]
Article
R. P. Clay, Auteur ;
B. L. Lanus, Auteur ;
J. A. Tobias, Auteur ;
J. C. Lowen, Auteur ;
J. M. Barnett, Auteur
In 1995, we discovered a population of the poorly known and critically endangered White-winged Nightjar (Caprimulgus candicans) in Yata'i (Butia paraguayensis) palm cerrado at the Mbaracayu Forest Nature Reserve, Paraguay. We provide the first d[...]
Article
J. R. Zimmerling, Auteur ;
C. D. Ankney, Auteur
During April-July 1997, we censused birds in three woodlands near Arnprior, Ontario, Canada using conventional point counts (n = 12) and point counts supplemented with "pishing" (n = 12), a well-known method for attracting various bird species. [...]
Article
G. H. Kattan, Auteur ;
H. Alvarez-Lopez, Auteur ;
N. Gomez, Auteur ;
L. Cruz, Auteur
Incidental to a study of the breeding biology of other cavity-nesting species, we obtained data on an Apical Flycatcher (Myiarchus apicalis) female that remained for 6.5 yr (September 1990-February 1997) in the same area in the Cauca Valley, sou[...]
Article
M. A. Bishop, Auteur ;
P. M. Meyers, Auteur ;
P. F. McNeley, Auteur
We estimated the: annual population of Western Sandpipers (Calidras mauri) and Dunlin ( Calidris alpina pacifica) stopping over on the Copper River Delta during peak spring migration 1992-1995. Our calculations required four components: total da[...]
Article
A. Borras, Auteur ;
J. Pascual, Auteur ;
J. C. Senar, Auteur
Bill measurement is important in many feeding studies. Traditionally, two alternative bill measures have been proposed: bill length measured from the tip to skull (i.e., total culmen), mainly used in Europe, and bill length measured from the tip[...]
Article
L. C. Phillips, Auteur ;
B. S. Hall, Auteur
The Red-cockaded Woodpecker population in Louisiana suffered massive habitat loss in the early 1900s resulting from Large-scale clearcutting. We examined post-harvest aerial photographs of Fort Polk, Louisiana, from the 1930s to determine the ex[...]
Article
F. E. Hayes, Auteur ;
N. A. Trimm, Auteur ;
B. Sanasie, Auteur ;
R. P. Ffrench, Auteur
We summarize data on the breeding biology (based on seven nests) of the White-tailed Sabrewing (Campylopterus ensipennis; Trochilidae) at Tobago, West Indies. Breeding occurred during the dry season (February-April). Nests were placed 1.75-11 m [...]
Article
B. R. Winton, Auteur ;
D. M. Leslie, Auteur ;
J. R. Rupert, Auteur
Snowy Plover (Charadrius alexandrinus) nests (n = 415) were monitored to completion on an expansive alkaline flat in north-central Oklahoma in 1995-1996. We reported Mayfield Method nesting success but relied on apparent nesting success to compa[...]
Article
W. S. Boyd, Auteur ;
S. D. Schneider, Auteur ;
S. A. Cullen, Auteur
Eared Grebes (Podiceps nigricollis) marked with small radio-transmitters in 1995 and 1996 at a breeding site in south-central British Columbia, Canada, were subsequently detected in fall at Mono Lake (California) and Great Salt Lake (Utah). At l[...]
Article
T. J. Maier, Auteur ;
R. M. Degraaf, Auteur
Photographs that clearly disclose avian-nest predators are difficult to obtain, particularly when predators are small and exhibit subtle depredatory behavior. We exposed House Sparrow (Passer domesticus) eggs injected with Rhodamine B dye in cam[...]
Article
H. B. Tordoff, Auteur ;
J. S. Castrale, Auteur ;
M. S. Martell, Auteur ;
P. T. Redig, Auteur
Because brood size might affect nutrition or behavioral development of young Peregrine Falcons (Falco peregrinus), we explored the relationship of the size of the brood from which individuals fledged to their probability of surviving to become b[...]
Article
W. S. Boyd, Auteur
The purpose of this study was to compare two survey protocols for estimating the size of Snow Goose flocks in winter. Compared to photo counts of the same flocks, visual estimates were biased low when flock size exceeded 2000 birds, and the degr[...]
Article
D. J. Flaspohler, Auteur ;
S. A. Temple, Auteur ;
R. N. Rosenfield, Auteur
We examined vegetation characteristics around nest sites of the Hermit Thrush (Catharus guttatus) and Ovenbird (Seiurus aurocapillus) for three summers in the northern- and mixed-hardwood forests of northern Wisconsin and the Upper Peninsula of [...]
Article
K. Lago, Auteur ;
L. S. Johnson, Auteur ;
D. J. Albrecht, Auteur
We compared the growth of late-hatched, competitively disadvantaged nestlings to that of their first-hatched, larger nestmates in 12 asynchronously hatching broods in a Wyoming population of House Wrens (Troglodytes aedon). Upon hatching, late-h[...]
Article
X. H. Wang, Auteur ;
C. H. Trost, Auteur
Trapping territorial Black-billed Magpies (Pica Pica) is challenging because magpies are extremely wary birds. We describe three successful techniques to capture territorial magpies during different periods of the breeding cycle. Funneled walk-i[...]
Article
The seasonal abundance of Neartic shorebirds in the Gulf of Maranhao, Brazil, was studied by censusing three sites from April 1991-March 1992. Censusing was conducted on Cajual Island and Panaquatira Beach at 15-d intervals and at 30-d intervals[...]
Article
M. A. Larson, Auteur ;
M. R. Ryan, Auteur ;
B. G. Root, Auteur
Population viability analyses for Piping Plovers (Charadrius melodus) are highly sensitive to survival estimates, especially those of adults. Thus, the discrepancy between the previous adult survival estimate for the Great Plains Piping Plover p[...]
Article
S. D. Oppenheimer, Auteur ;
M. L. Morton, Auteur
The nesting habits of Rock Wrens (Salpinctes obsoletus) were investigated at high altitude in the Sierra Nevada Mountains of California. Nests were built in cavities located under rocks or within rocky outcrops. The birds placed small, flat rock[...]
Article
G. L. Farnsworth, Auteur ;
K. C. Weeks, Auteur ;
T. R. Simons, Auteur
We tested the assumptions of thr Mayfield method (Mayfield 1975) using 416 Wood Thrush (Hylocichla mustelina) nests monitored from 1993-1997 in the Great Smoky Mountains National Park. We tested for differences in nest survival throughout the br[...]
Article
The seasonal abundance of Neartic shorebirds in the Gulf of Maranhao, Brazil, was studied by censusing three sites from April 1991-March 1992. Censusing was conducted on Cajual Island and Panaquatira Beach at 15-d intervals and at 30-d intervals[...]
