| Titre : | Journal of Field Ornithology 89(1) - March, 2018 |
| Type de document : | Bulletin |
| Paru le : | 01/03/2018 |
Dépouillements
Article
Alexis R. Grinde, Auteur ;
Gerald J. Niemi, Auteur ;
Matthew A. Etterson, Auteur
Point counts are the most commonly used technique for surveying passerines during the breeding season. Several methods for estimating probabilities of detection during point count surveys have been developed. These methods have focused primarily[...]
Article
John P. Carpenter, Auteur ;
Yong Wang, Auteur
Detailed information about space use during the breeding season is limited for most Nearctic-Neotropical migratory species of songbirds because of their small size and often cryptic behaviors. We monitored male Cerulean Warblers (Setophaga cerul[...]
Article
Adam J. Becker, Auteur ;
Diane V. Roeder, Auteur ;
Michael S. Husak, Auteur ;
Michael T. Murphy, Auteur
Knowledge of survival rates is critical for advancing our understanding of the dynamics of populations and here we report apparent annual survival and breeding dispersal of Scissor-tailed Flycatchers (Tyrannus forficatus) breeding at two sites i[...]
Article
Article
Jennifer M. Arnold, Auteur ;
Stephen A. Oswald, Auteur
Birds encounter climate at the scale of microclimates that can vary rapidly in time and space and so understanding potential vulnerability and adaptations to those microclimates requires fine-scale measurements that accurately track thermal expo[...]
Article
Alexander M. Chang, Auteur ;
Karen L. Wiebe, Auteur
Birds overwintering at high latitudes may find it challenging to meet their energy budgets when thermoregulatory costs are high and food availability is low. Snowy Owls (Bubo scandiacus), like most raptors, exhibit reversed sexual size dimorphis[...]
Article
Max L. Witynski, Auteur ;
David N. Bonter, Auteur
Yellow Warblers (Setophaga petechia) are abundant breeding birds in North America, but their migratory and non-breeding biology remain poorly understood. Studies where genetic and isotopic techniques were used identified parallel migration syste[...]
Article
Seth W. Judge, Auteur ;
Richard J. Camp, Auteur ;
Patrick J. Hart, Auteur ;
Scott T. Kichman, Auteur
Endangered Hawai‘i ʻĀkepas (Loxops coccineus) are endemic to Hawai‘i island, where they occur in five spatially distinct populations. Data concerning the status and population trends of these unique Hawaiian honeycreepers are crucial for assessi[...]
Article
Christine R. Dahlin, Auteur ;
Chelsea Blake, Auteur ;
Jake Rising, Auteur ;
Timothy F. Wright, Auteur
The population of Yellow-naped Amazons (Amazona auropalliata) declined by an estimated 50% between 1980 and 2000, and the current population is estimated to be between 10,000 and 50,000. Poaching of young has been a persistent problem, but the s[...]
