| Titre : | The Auk 124(1) - janvier 1, 2007 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
Kristina L. Paxton, Auteur ;
Charles Van Riper, Auteur ;
Tad C. Theimer, Auteur ;
Eben H. Paxton, Auteur ;
K. A. Hobson, Auteur
Abstract We used stable hydrogen isotopes (δD) to identify the breeding locations of Wilson?s Warbler (Wilsonia pusilla) migrating through five sites spanning a cross-section of the species? southwestern migration route during the springs of 200[...]
Article
Gareth J. Dyke, Auteur ;
Robert L. Nudds, Auteur ;
Michael J. Benton, Auteur
Article
Muir D. Eaton, Auteur ;
K. P. Johnson, Auteur
Abstract Male and female birds can exhibit striking differences in morphology (dimorphism), including exaggerated plumage structures, size differences, and feather color differences, yet most species are considered to have identical sexes. Class[...]
Article
Clive F. Mann, Auteur
Article
Jose G. Tello, Auteur ;
John M. Bates, Auteur ;
K. P. Johnson, Auteur
Abstract The tody-tyrant and flatbill assemblage, sensu Lanyon (1988a), includes 12 genera of tyrant flycatchers known variously as ?tody-tyrants? and ?flatbills.? Lanyon supported the monophyly of the group based on similar skull morphology and[...]
Article
Jodie M. Jawor, Auteur ;
A. M. Dufty, Auteur
Abstract Two attributes of many temperate passerine species are short-term territoriality and strongly fluctuating annual testosterone (T) profiles. Circulating T of temperate passerines can vary from undetectable levels in the nonbreeding seaso[...]
Article
David N. Bonter, Auteur ;
Therese M. Donovan, Auteur ;
Elizabeth W. Brooks, Auteur ;
K. A. Hobson, Auteur
Abstract Assigning conservation priorities to areas used by birds during migration requires information on the relative quality of areas and habitats. The rate at which migratory birds replenish energy reserves during stopover may be used as an [...]
Article
James A. Rotenberg, Auteur ;
P. C. Stouffer, Auteur
Abstract Established parks and nature reserves may be inadequate to preserve long-term biotic diversity, especially in tropical regions of Latin America where anthropogenic disturbance and land-conversion is an ongoing problem. Demand for econom[...]
Article
Robert J. Smith, Auteur ;
Frank R. Moore, Auteur ;
Christopher A. May, Auteur ;
D. B. Lank, Auteur
Abstract Recent work in Michigan's eastern Upper Peninsula suggests that terrestrial areas bordering northern Lake Huron provide important stopover habitat for spring migrating landbirds, principally because of the presence of emergent aquatic m[...]
Article
Karen Zimmermann, Auteur ;
J. Mark Hipfner, Auteur ;
A. E. Burger, Auteur
Abstract Although the ultimate factors that influence the duration of avian incubation periods are well known, we know much less about the proximate mechanisms by which birds adjust incubation period in response to selection. We tested the hypot[...]
Article
Duane R. Diefenbach, Auteur ;
Matthew R. Marshall, Auteur ;
Jennifer A. Mattice, Auteur ;
Daniel W. Brauning, Auteur ;
D. H. Johnson, Auteur
Abstract Several bird-survey methods have been proposed that provide an estimated detection probability so that bird-count statistics can be used to estimate bird abundance. However, some of these estimators adjust counts of birds observed by th[...]
Article
Philip C. Stouffer, Auteur ;
J. H. Vega Rivera, Auteur
Abstract From 1994 to 2003, I annually surveyed terrestrial insectivorous birds in a 100-ha plot within continuous rainforest near Manaus, Brazil. I used spot-map registrations and radiotagged birds to estimate territory size and density on the [...]
Article
Steven D. Emslie, Auteur ;
H. F. James, Auteur
Abstract Seven living species of passerines are identified or tentatively identified from the early Pliocene Fox Canyon locality (4.3?4.8 mya), Rexroad Formation, Meade Basin, southwestern Kansas. All seven species occur in Kansas today, primari[...]
Article
Paul A. Smith, Auteur ;
H. Grant Gilchrist, Auteur ;
James N. M. Smith, Auteur ;
Erica Nol, Auteur ;
D. B. Lank, Auteur
Abstract By nesting near aggressive birds, timid species can reap the benefits of aggressive nest defense while avoiding the costs. Red Phalaropes (Phalaropus fulicarius; hereafter ?phalaropes?) typically nest in grass-sedge marshes, but nests h[...]
Article
W. Andrew Cox, Auteur ;
Rebecca T. Kimball, Auteur ;
Edward L. Braun, Auteur ;
J. Klicka, Auteur
Abstract The evolutionary relationship between the New World quail (Odontophoridae) and other groups of Galliformes has been an area of debate. In particular, the relationship between the New World quail and guineafowl (Numidinae) has been diffi[...]
Article
Brian D. Linkhart, Auteur ;
Richard T. Reynolds, Auteur ;
F. M. Jaksic, Auteur
Abstract We estimated annual return rate, fidelity, and breeding dispersal in a migratory population of Flammulated Owls (Otus flammeolus) in central Colorado. Return rates, based on capture-recapture histories of 39 males and 52 females from 19[...]
Article
BriAnne Addison, Auteur ;
Ronald C. Ydenberg, Auteur ;
Barry D. Smith, Auteur ;
A. E. Burger, Auteur
Abstract In spite of their putative importance in the evolution of certain traits (e.g., nocturnality, coloniality, cliff nesting), the effects of aerial predators on behavior of adult seabirds at colonies have been poorly investigated. We hypot[...]
Article
Ann Göth, Auteur ;
J. V. Briskie, Auteur
Abstract Males of the polyandrous Australian Brush-turkey (Alectura lathami) build mounds of leaf litter, in which incubation heat is produced by microbial decomposition. Females lay eggs singly, at intervals of several days, over many months. F[...]
Article
Jennifer R. Foote, Auteur ;
Colleen A. Barber, Auteur ;
K. Yasukawa, Auteur
Abstract Using shared songs is believed to be an integral part of neighbor communication and territory establishment strategies among many avian species with repertoires. Previous studies of two western subspecies of Song Sparrows (Melospiza mel[...]
Article
Kelly A. Squires, Auteur ;
Kathy Martin, Auteur ;
R. Ian Goudie, Auteur ;
K. Yasukawa, Auteur
Abstract Males of several avian species are more vigilant than their female partners, particularly during the preincubation period. Male vigilance may function as a deterrent of extrapair copulation attempts (EPCs) or to ensure male survival, be[...]
Article
Wan-Chun Liu, Auteur ;
Donald E. Kroodsma, Auteur ;
K. Yasukawa, Auteur
Abstract Songbirds typically have small-to-large repertoires of different song types used in complex patterns over a day or season, but what remains poorly understood are patterns of song use by songbirds that have a single, simple song. Here, o[...]
Article
M. Zachariah Peery, Auteur ;
Benjamin H. Becker, Auteur ;
Steven R. Beissinger, Auteur ;
A. E. Burger, Auteur
Abstract The ratio of hatch-year (HY) to after-hatch-year (AHY) individuals (HY:AHY ratio) can be a valuable metric for estimating avian productivity because it does not require monitoring individual breeding sites and can often be estimated acr[...]
Article
Stéphanie M. Doucet, Auteur ;
David B. McDonald, Auteur ;
Mercedes S. Foster, Auteur ;
Rob P. Clay, Auteur ;
D. B. Lank, Auteur
Abstract Lek-mating Long-tailed Manakins (Chiroxiphia linearis) exhibit an unusual pattern of delayed plumage maturation. Each year, males progress through a series of predefinitive plumages before attaining definitive plumage in their fifth cal[...]
Article
Liana Zanette, Auteur ;
Daniel T. Haydon, Auteur ;
James N. M. Smith, Auteur ;
Mary J. Taitt, Auteur ;
Michael Clinchy, Auteur ;
R. C. Fleischer, Auteur
Abstract The demographic significance of parasitism by Brown-headed Cowbirds (Molothrus ater; hereafter ?cowbirds?) has been debated for years, because manipulative studies are few and mathematical models of cowbird-host systems have not led to [...]
Article
Morton L. Isler, Auteur ;
Phyllis R. Isler, Auteur ;
Bret M. Whitney, Auteur ;
K. Yasukawa, Auteur
Abstract Six populations of Warbling Antbird (Hypocnemis cantator) currently considered subspecies are more appropriately recognized as species, given the multiplicity of vocal differences that distinguishes them. These vocal differences are as [...]
Article
Kazuya Naoki, Auteur ;
P. C. Stouffer, Auteur
Abstract The distribution and abundance of food are primary factors affecting resource-use patterns in birds. Many bird species eat several food types, which may differ in their distribution and overall abundance. I studied foraging ecology of s[...]
Article
Article
Carlos A. Botero, Auteur ;
Sandra L. Vehrencamp, Auteur ;
K. Yasukawa, Auteur
Abstract Despite their large vocal repertoires and otherwise highly versatile singing style, male mockingbirds (Mimus spp.) sometimes sing in a highly repetitive fashion. We conducted a playback experiment to determine the possible signal value [...]
Article
Betsy Abroe, Auteur ;
Julia C. Garvin, Auteur ;
Marc C. Pedersen, Auteur ;
Linda A. Whittingham, Auteur ;
Peter O. Dunn, Auteur ;
D. B. Lank, Auteur
Abstract When the reproductive value of sons differs from that of daughters, selection will favor broods biased toward the sex that can provide greater fitness benefits. In species where female choice is based on male ornamentation, females mate[...]
