| Titre : | Journal of Field Ornithology 73(2) - SPR 2002 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
J. R. Garrido, Auteur ;
C. G. Sarasa, Auteur ;
M. Fernandez-Cruz, Auteur
Optimal foraging theory predicts that individuals should resort to kleptoparasitizing food when the net energy obtained from this behavior is greater than that gained from searching for food conventionally. We studied kleptoparasitism in the Cat[...]
Article
R. N. Conner, Auteur ;
D. Saenz, Auteur ;
D. C. Rudolph, Auteur ;
R. R. Schaefer, Auteur
Rates of cavity excavation by Red-cockaded Woodpeckers (Picoides borealis) were examined from 1983 to 1999 on the Angelina National Forest in east Texas. We compared the race of natural cavity excavation between 1983 and 1990 (before artificial [...]
Article
Banded Roseate Terns (Sterna dougallii) trapped on nests in the Azores illustrate that, during the nonbreeding season, birds from the Azores are found on the coast of Africa in groups of Roseate Terns from northern Europe and on the coast Of Sou[...]
Article
I. C. T. Nisbet, Auteur ;
V. Apanius, Auteur ;
M. S. Friar, Auteur
We studied the breeding performance of very old Common Terns (Sterna hirundo) at Bird Island, USA (41degrees40degreesN, 70degrees43degreesW) in 1999. We studied birds aged greater than or equal to 18 yr, comprising the oldest 5% of the birds bre[...]
Article
B. Fuertes, Auteur ;
J. Garcia, Auteur ;
J. M. Colino, Auteur
We used a modified fish trap called a "single strip Dutch sleeve" to capture small rails in Spain. During 94 trap-days, We Captured 29 individual Water Rails (Rallus aquaticus), three Spotted Crakes (Porzana porzana), and nine Common Moorhens (G[...]
Article
B. S. Cook-Haley, Auteur ;
K. F. Millenbah, Auteur
Common Terns (Sterna hirundo) typically favor nest sites with 10-30% vegetative cover, and cover >30% may decrease nest success. Vegetation manipulations were performed in summer 1998 on Lime Island, Michigan, to determine if vegetative structur[...]
Article
R. M. Fraga, Auteur
New information on the interactions among Shiny Cowbirds (Molothrus bonariensis) and 12 host species in Argentina is presented. Observacions and experiments suggest that Brown Cacholotes (Pseudoseisura lophotes) remove cowbird eggs from their ne[...]
Article
A. N. Powell, Auteur ;
C. L. Firtz, Auteur ;
B. L. Peterson, Auteur ;
J. M. Terp, Auteur
We conducted intensive surveys of breeding and wintering Snowy Plovers (Charadrius alexandrinus nivosus) in San Diego County from 1994 through the winter of 1999. We found Snowy Plovers using 11 sites within the study area for nesting and at lea[...]
Article
R. W. Brook, Auteur ;
R. G. Clark, Auteur
Forty-seven wild female Lesser Scaup (Aythya affinis) were marked with nasal markers and radio transmitters (implanted subcutaneously on the back) just prior to breeding near Yellowknife, Northwest Territories, in 1999 and 2000, Retention rate, [...]
Article
O. Hinojosa-Huerta, Auteur ;
S. Destefano, Auteur ;
W. W. Shaw, Auteur
During March-June 2000 we evaluated the use of call-response surveys to monitor breeding Yuma Clapper Rails (Rallus longirostris yumanensis) at the Cienega de Santa Clara, Colorado River Delta, Sonora, Mexico. We assessed the effect that time of[...]
Article
A. Kosztolanyi, Auteur ;
T. Szekely, Auteur
We investigated the incubation behavior of a ground-nesting shorebird, the Snowy Plover (Charadrius a. alexandrinus) by developing a transponder system that recorded the identity of parents on their nest over 24 h. The system consisted of a smal[...]
Article
H. D. W. Powell, Auteur ;
S. J. Hejl, Auteur ;
D. L. Six, Auteur
Measurements of food availability for avian insectivores are desirable, but are complicated by the range of microhabitats insects occupy and the difficulty of comparing non-standard techniques across studies. We describe an efficient method for [...]
Article
A. J. Redondo, Auteur ;
L. Arias-de-Reyna, Auteur
We describe a system for photographing the longitudinal and transverse planes of bird eggs that improves accuracy of measurements of egg size and increases the speed of data collection. The proposed system consists of a flat support, with a few [...]
Article
M. D. Johnson, Auteur ;
D. R. Ruthrauff, Auteur ;
J. G. Jones, Auteur ;
J. R. Tietz, Auteur ;
J. K. Robinson, Auteur
Forced regurgitation by oral administration of tartar emetic has been used frequently to examine avian diets because it does not require killing birds directly, but indirect (delayed) mortality by this technique is not well studied. We examined [...]
Article
G. J. Fernandez, Auteur ;
J. C. Reboreda, Auteur
Greater Rheas (Rhea americana) are ground-nesting birds chat have high rates of nest desertion commonly associated with egg predation. We studied whether male Greater Rheas selected concealed sites to decrease decectability of their nests. We an[...]
Article
F. R. Thompson, Auteur ;
D. E. Burhans, Auteur ;
B. Root, Auteur
We used a three-year point-count data set from Hoosier National Forest, Indiana, to evaluate alternative point-count sampling strategies for detecting songbird declines. Repeated-measures ANOVA indicated that mean abundance estimates increased w[...]
