| Titre : | Journal of Field Ornithology 77(1) - WIN 2006 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
V. Massoni, Auteur ;
D. W. Winkler, Auteur ;
J. C. Reboreda, Auteur
Swallows and martins are infrequent hosts of the generalist brood parasite Shiny Cowbird (Molothrus bonariensis). We monitored 50 nesting attempts by White-rumped Swallows (Tachycineta leucorrhoa) over a two-year period in Argentina and detected[...]
Article
A. M. Mills, Auteur ;
J. D. Rising, Auteur ;
D. A. Jackson, Auteur
Some birds exhibit clustered breeding in which all-purpose territories are densely packed, leaving intervening but apparently suitable habitat unoccupied. Clustering could be ecologically driven by material resource patterns or socially driven b[...]
Article
J. P. Roberts, Auteur ;
G. D. Schnell, Auteur
Although investigators have evaluated the efficacy of survey methods for assessing densities of breeding birds, few comparisons have been made of survey methods for wintering birds, especially in grasslands. In winter, social behavior and spatia[...]
Article
K. J. McGraw, Auteur ;
L. S. Hardy, Auteur
Carotenoid pigments produce the red, orange, and yellow plumage of many birds. Carotenoid-containing feathers are typically rich in color and displayed by all adult members of the species. In many gulls and terns, however, an unusual light pink [...]
Article
S. Nebel, Auteur
Differential distribution of nonbreeding Least Sandpipers (Calidris minutilla) according to sex, bill, and wing length was documented using capture data from six locations between California and Ecuador. The distribution of age classes did not v[...]
Article
D. L. Humple, Auteur ;
A. L. Holmes, Auteur
We studied the breeding biology of Loggerhead Shrikes (Lanius ludavicianus) in northeastern Oregon from 1995 to 1997 and 2000 to 2001. A wildfire in 1998 burned approximately half the big sagebrush (Artemisia tridentata) at this site, permitting[...]
Article
D. L. Amirault, Auteur ;
J. McKnight, Auteur ;
F. Shaffer, Auteur ;
K. Baker, Auteur ;
L. MacDonnell, Auteur ;
P. Thomas, Auteur
We placed 1078 plastic and anodized aluminum auxiliary bands on Piping Plovers (Charadrius melodus) in eastern Canada from 1998 to 2003. Seventeen apparent band-related injuries, ranging from abrasion to foot loss, were observed from 361 recaptu[...]
Article
Article
A. Margalida, Auteur ;
S. Ecolan, Auteur ;
J. Boudet, Auteur ;
J. Bertran, Auteur ;
J. M. Martinez, Auteur ;
R. Heredia, Auteur
We designed a system of solar-powered video cameras that transmitted images via telemetry to a monitor. This system allowed us to study the breeding behavior of the Bearded Vulture (Gypaetus barbatus) in the Pyrenees (northeastern Spain). From 2[...]
Article
F. Alvarez, Auteur ;
C. Sanchez, Auteur ;
S. Angulo, Auteur
Prey-predator communication of alertness has been reported for Moorhens (Gallinula chloropus) and other species of birds. Because ability to flee is probably related to body condition, healthy potential prey may behave more conspicuously to send[...]
Article
K. C. Donohue, Auteur ;
A. M. Dufty, Auteur
Currently, the sex of Red-tailed hawks (Buteo jamaicensis) cannot be determined by in-hand methods. Males and females do not differ in plumage and overlap in size. We collected feather samples and morphological measurements from migrating birds [...]
Article
R. Ortiz-Pulido, Auteur ;
V. Martinez-Garcia, Auteur
We report an observation of a female Lucifer Hummingbird (Calathorax lucifer) with iridescent feathers oil the chill, resembling the plumage of the juvenile male. The female and nest were found in a xeric shrubland in Barranca de Metztitlan Bios[...]
Article
N. Lecomte, Auteur ;
G. Gauthier, Auteur ;
L. Bernatchez, Auteur ;
J. F. Giroux, Auteur
Development of minimally invasive techniques to collect blood in free-living birds is desirable for both ethical and conservation reasons. We describe a new, simple technique for collecting blood samples from waterfowl eggs that involves recover[...]
Article
P. Franco, Auteur ;
K. Fierro-Calderon, Auteur ;
G. Kattan, Auteur
We present the first report of population density and home range estimates for the Chestnut Wood-quail (Odontophorus hyperythrus), an endemic and nearly threatened species of the Colombian Andes. Density estimates were obtained using playbacks a[...]
Article
S. K. Male, Auteur ;
J. Jones, Auteur ;
R. J. Robertson, Auteur
In territorial species, increased density is often linked to all increase in aggressive interactions, which may, result in trade-offs between competitive behavior and nest construction We examined the impact of nestin ' g in areas of high-densit[...]
