| Titre : | Journal of Field Ornithology 91(3) - 2020 |
| Type de document : | Bulletin |
| Paru le : | 01/09/2020 |
Dépouillements
Article
Andrew J. Campomizzi, Auteur ;
Zoé M. Lebrun‐Southcott, Auteur ;
Christopher M. Lituma, Auteur
Estimating the abundance and breeding success of territorial songbirds is challenging. Various types of surveys and analyses are available, but all receive some criticism in the literature, and most methods are rarely compared with results obtai[...]
Article
Eamon J. Harrity, Auteur ;
Courtney J. Conway, Auteur
Preventing or reversing population declines of rare species often requires an understanding of their complete annual life cycle, but this information is lacking for many species. Such has been the case for Yuma Ridgway’s Rails (Rallus obsoletus [...]
Article
Enya Astrid Córdoba‐Cuevas, Auteur ;
Sara Patricia Ibarra‐Zavaleta, Auteur ;
Ernesto Ruelas Inzunza, Auteur
Bird banding has allowed us to understand diverse aspects of the life histories of migratory raptors. However, most banding stations are located at northern latitudes so what we know about the movements of these raptors is biased toward higher l[...]
Article
Mark E. Hauber, Auteur ;
Caterina R. Kim, Auteur ;
Cameron Goethe, Auteur ;
Daniel Hanley, Auteur
Many hosts of obligate brood-parasitic birds use variation in the coloration and pattern of eggshells to identify and reject foreign eggs from their nests. However, egg-rejection behavior of several hosts is not tightly predicted by the modeled [...]
Article
Matthew Fuirst, Auteur ;
Jessica Greer, Auteur ;
Reed Bowman, Auteur
Florida Scrub-Jays (Aphelocoma coerulescens) are cooperative breeders endemic to Florida’s oak scrub. In autumn, Florida Scrub-Jays cache thousands of acorns and exhibit behaviors that appear to balance cache site selection against food degradat[...]
Article
Joseph L. Ganey, Auteur ;
James P. Ward, Auteur ;
Todd A. Rawlinson, Auteur ;
Sean C. Kyle, Auteur ;
Ryan S. Jonnes, Auteur
Global climate change presents a growing conservation threat, but our understanding of the effects of climate change remains limited for most species. We evaluated the annual climate cycle for threatened Mexican Spotted Owls (Strix occidentalis [...]
Article
James D. Kelley, Auteur ;
Heather L. Major, Auteur
Populations of scoter and loon species that winter in the Atlantic are understudied in North America, but coastal observatories may provide the data required to fill some of the knowledge gaps. The migration of scoters and loons has been monitor[...]
Article
Abigail M. Searfoss, Auteur ;
Wan-Chun Liu, Auteur ;
Nicole Creanza, Auteur
Previous studies have revealed diel patterns in the songs of Chipping Sparrows (Spizella passerina), with songs shorter in duration before dawn than after. However, the extent to which this phenomenon generalizes to the full geographic range of [...]
