| Titre : | Journal of Field Ornithology 76(3) - SUM 2005 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
A. S. Dolby, Auteur ;
C. E. Clarkson, Auteur ;
E. T. Haas, Auteur ;
J. K. Miller, Auteur ;
L. E. Havens, Auteur ;
B. K. Cox, Auteur
Sexual selection theory, proposes that elaborate male secondary, sexual characteristics, including complex song, may increase the attractiveness of males by, honestly communicating to females their genetic quality or ability to provide material [...]
Article
D. M. Evans, Auteur ;
S. M. Redpath, Auteur ;
S. A. Evans, Auteur
In many birds, it is assumed chat conditions for breeding follow a seasonal pattern of improvement and then decline and that for each individual in the population the optimal clutch size is larger when conditions for breeding are more favorable.[...]
Article
E. B. Cohen, Auteur ;
C. A. Lindell, Auteur
Most work on the effects of land-cover change on tropical birds has focused on forest-interior birds because these species are assumed to be the most severely affected by forest loss. However, even species that use human-altered habitat types ma[...]
Article
J. J. Roper, Auteur
The Rufous Hornero, (Furnarius rufus: Family Furnariidae), common in southern Brazil, is a territorial, sexually monomorphic bird in which pairs sing duets. This family of birds is known for its lack of sexual dimorphism and for the simplicity o[...]
Article
L. A. Powell, Auteur ;
J. D. Lang, Auteur ;
D. G. Krementz, Auteur ;
M. J. Conroy, Auteur
We used traditional searching, as well as radio-telementry, to find 125 Wood Thrush (Hylbcichla mustelina) nests during 1994-1996 at the Piedmont National Wildlife Refuge in Georgia, USA. We compared daily nest survival rates for 66 nests of rad[...]
Article
S. W. Cooper, Auteur ;
G. Ritchison, Auteur
In birds, males and females may benefit by choosing mates based on morphological characteristics correlated with their ability to provide parental care. Our objective was to examine possible relationships between morphological characteristics an[...]
Article
I report the first nesting records for the Puerto Rican Nightjar (Caprimulgus noctitherus) and Antillean Nighthawk (Chordeiles gundlachii) in Maricao Forest, a montane rain forest of western Puerto Rico. The nightjar nested in leaf litter at the[...]
Article
J. B. Sabine, Auteur ;
J. M. Meyers, Auteur ;
S. H. Schweitzer, Auteur
Time-lapse video photography has become a valuable tool for collecting data on avian nest activity and depredition; however, commercially available systems are expensive (> USA $4000/unit). We designed an inexpensive system to identify causes of[...]
Article
S. L. Small, Auteur
Nest predation was the main nest mortality factor for Spotted Towhees (Pipilo ntacuZattis) along the Sacramento River, California, during 1993-2003, followed by cowbird parasitism. From 2001 to 2003, 1 monitored 161 Spotted Towhee nests and film[...]
Article
V. Penteriani, Auteur ;
F. Sergio, Auteur ;
M. D. Delgado, Auteur ;
M. Gallardo, Auteur ;
M. Ferrer, Auteur
Many Studies have reported variation in bird diet composition related to spatial variation in habitat quality and landscape heterogeneity. Most diet analyses involve collection of food items at a sub-sample of available sites. Because individual[...]
Article
P. J. Doran, Auteur ;
P. Z. Gulezian, Auteur ;
M. G. Betts, Auteur
Accurate measures of reproductive performance in birds are vital to effective conservation and management Of Populations. We evaluate the effectiveness of a recently proposed method to estimate reproductive performance based upon behavior of bre[...]
Article
T. Katzner, Auteur ;
S. Robertson, Auteur ;
B. Robertson, Auteur ;
J. Klucsarits, Auteur ;
K. McCarty, Auteur ;
K. L. Bildstein, Auteur
A long-term, volunteer-based nest-box program for American Kestrels (Falco sparverius) breeding in eastern Pennsylvania was evaluated to identify ways to increase the efficiency of the program and to identify general principles that can be used [...]
Article
J. M. Whitaker, Auteur ;
D. A. Cristol, Auteur ;
M. H. Forsyth, Auteur
Bacillus licbeniformis, a soil bacterium capable of degrading the beta-keratin in feathers, is present in the plumage of some wild-caught birds, but the published carriage rate is quite low. Microbial degradation could be a selective agent leadi[...]
Article
Nocturnal activity and energetic condition of spring landbird migrants at Braddock Bay, Lake Ontario
S. B. Smith, Auteur ;
C. J. Norment, Auteur
We investigated the relationship between migratory restlessness and stored energy reserves in two species of landbird migrants at Braddock Bay, Lake Ontario during spring 1999 and spring 2000. There was no significant difference in the amount of[...]
Article
P. O. Dunn, Auteur ;
L. A. Whittingham, Auteur
We radio-tracked eight female Tree Swallows (Tachycineta bicolor) prior to egg-laying in 2000 and 2001. Six females made movements > 2 kin to evening roosting sires. Females often roosted farther away than the nearest available roost site, they [...]
