| Titre : | Journal of Field Ornithology 72(3) - SUM 2001 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
The O'ahu 'Elepaio (Chasiempis sandwichensis ibidis) is an endangered monarch flycatcher endemic to the Hawaiian Island of O'ahu. One of the main causes of the decline of this forest bird is low nest success. This study investigated whether intr[...]
Article
Based on recordings and observations from the Yucatan Peninsula, I present the first formal description of the song characteristics and singing behavior of the Mangrove Warbler Male Mangrove Warblers sing multiple song types with immediate varie[...]
Article
R. M. Kostecke, Auteur ;
G. M. Linz, Auteur ;
W. J. Bleier, Auteur
Scavenging of carcasses may bias estimates of mor talin following the use of pesticides. To assess carcass survival, we monitored bird carcasses in crop stubble, grassland, roadside, and wooded habitats in east-central South Dakota in earl! spri[...]
Article
J. S. Marks, Auteur
Smith et al. (1999) assessed nest-site selection in Great Horned Owls (Bubo virginianus) ht comparing data from 75 owl nests with data recorded at random sites derived from computer-generated map coordinates. The authors concluded that owl nests[...]
Article
E. H. Dunn, Auteur
Hourly mass gain during migratory stopover in spring and fall was estimated for 48 species at three sites on Long Point, Ontario. Estimates were based on regression of size corrected mass at first capture on time of day. Mean mass gain for all s[...]
Article
A. M. Stoehr, Auteur ;
K. J. McGraw, Auteur ;
P. M. Nolan, Auteur ;
G. E. Hill, Auteur
Studies that quantify parental care in birds are often faced with the confounding effects of variation in brood size. That is, nestlings from broods of varying sizes may receive different quantities of food for reasons not entirely related to th[...]
Article
E. M. Joyce, Auteur ;
T. S. Sillett, Auteur ;
R. T. Holmes, Auteur
Quantifying incubation patterns has often involved long observation periods in the field, video cameras, or the use of other electronic devices that sometimes require the partial destruction of clutches and insertion of artificial eggs. In this [...]
Article
J. P. DeLong, Auteur ;
J. A. Gessaman, Auteur
We evaluated the use of three direct methods (fat scoring, condition indices, and multiple regression of external morphological variables) to estimate total body fat (TBF) in Sharp-shinned Hawks (Accipiter striatus) and Cooper's Hawks (A. cooper[...]
Article
Article
M. A. Brooks, Auteur ;
B. C. Harrigan, Auteur ;
K. M. Johnson, Auteur ;
D. E. Lowe, Auteur ;
J. P. Lowery, Auteur ;
J. W. McGlothlin, Auteur ;
M. M. Sasso, Auteur ;
S. A. Smith, Auteur ;
D. A. Cristol, Auteur
We compared two fixed-radius point count sampling regimes using two abundant breeding species. the Dark-eyed Junco (Junco hyemalis) and the Chestnut-sided Warbler (Dendroica pensylvanica), in a forested landscape in the southern Appalachian moun[...]
Article
J. G. Burns, Auteur ;
S. L. Wardrop, Auteur
Raptor attacks in the wild can be difficult to observe and impossible to manipulate in a repeatable manner. We have developed a bicycle-driven model raptor ("Veloci-Raptor") to test prey responses to raptor attacks. Previous researchers have use[...]
Article
A. R. Harmata, Auteur ;
M. Restani, Auteur ;
G. J. Montopoli, Auteur ;
J. R. Zelenak, Auteur ;
J. T. Ensign, Auteur ;
P. J. Harmata, Auteur
Of 233 Ferruginous Hawks (Buteo regalis) banded as nestlings in three study areas of Montana over 16 years, 15 (6.4%) were recovered. Recovery rate increased with duration of study and cumulative number banded. Mean age at recovery, for all Ferr[...]
Article
J. S. Marks, Auteur
Bosakowski and Smith's (2001) reply to my commentary reflects a fundamental difference in our lives of what constitutes "nest-site selection" and a misunderstanding of why random points would have been inadequate for assessing this trait in one [...]
Article
R. L. Crawford, Auteur ;
R. T. Engstrom, Auteur
The study of birds killed at the WCTV television tower in north Florida over a 29-yr period is one of the longest of its kind. A total of 44,007 individuals in 186 species was collected, and over 94% of the total number of individuals were Neotr[...]
Article
T. Bosakowski, Auteur ;
D. G. Smith, Auteur
Marks (2001) is critical of our study of nest-site selection in Great Horned Owls (Bubo virginianus) because we compared our data from owl nests with data from random points rather than from unused stick nests. We argue that Great Horned Owls ha[...]
Article
C. C. Rimmer, Auteur ;
J. R. Tietz, Auteur
We describe a breeding male Blackpoll Warbler (Dendroica striata) in aberrant female-like plumage captured on Mt. Mansfield, Vermont, in 1998. The bird had been banded the previous summer in typical alternate-male plumage. This appears to repres[...]
Article
M. A. Etterson, Auteur ;
M. Howery, Auteur
Loggerhead Shrikes (Lanius ludovicianus) have rarely been observed engaging in kleptoparasitism. We describe two observations of kleptoparasitism by Loggerhead Shrikes on soil-foraging songbirds. We suggest that kleptoparasitism of these birds g[...]
Article
M. Bertellotti, Auteur ;
P. Yorio, Auteur ;
G. Blanco, Auteur ;
M. Giaccardi, Auteur
We evaluated the magnitude of use of waste tips by Kelp Gulls (Larus dominicanus) nesting at Isla de los Pajaros, a large and growing colony in Patagonia, Argentina, and we assessed the difference in use between tips with urban and fishery waste[...]
