Where Bluebirds fly
نویسندگان
چکیده
منابع مشابه
O fly, where art thou?
In this paper, the design of a real-time image acquisition system for tracking the movement of Drosophila in three-dimensional space is presented. The system uses three calibrated and synchronized cameras to detect multiple flies and integrates the detected fly silhouettes to construct the three-dimensional visual hull models of each fly. We used an extended Kalman filter to estimate the state ...
متن کاملUsing molt limits to age Western Bluebirds
Using data on the extent of prebasic molt in known-aged adult and first-winter Western Bluebirds (Sialia mexicana), we assessed the accuracy of the molt limit as a tool for ageing birds. Sixty-nine known-aged birds were examined over the winter 2002–2003 in upper Carmel Valley, California. We also examined 29 breeding males in spring 2004 to assess the accuracy of this method for ageing birds d...
متن کاملSex-specific costs of reproduction in Eastern Bluebirds Sialia sialis.
In species with bi-parental care, individuals must partition energy between parental effort and mating effort. Typically, female songbirds invest more than males in reproductive activities such as egg-laying and incubation, but males invest more in secondary sexual traits used in attracting mates. Animals that breed more than once within a season must also allocate time and energy between first...
متن کاملHatching order explains an extrapair chick advantage in western bluebirds
Elise D. Ferree, Janis Dickinson, Wallace Rendell, Caitlin Stern, and Stephanie Porter Cornell Lab of Ornithology, Cornell University, Ithaca, NY 14850, USA, Department of Natural Resources, Cornell University, Ithaca, NY 14850, USA, Department of Biosciences, Loyalist College, Belleville, Ontario K8N 2H4, Canada, Department of Neurobiology and Behavior, Cornell University, Ithaca, NY 14850, US...
متن کاملDemography of Reintroduced Eastern Bluebirds and Brown-Headed Nuthatches
Species reintroductions are used commonly as a tool for conservation, but rigorous, quantitative assessments of their outcome rarely occur. Such assessments are critical for determining success of the reintroduction and for identifying management actions needed to ensure persistence of reintroduced populations. We collected 9 years of demographic data on populations of brown-headed nuthatches (...
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ژورنال
عنوان ژورنال: Escritura e Imagen
سال: 2018
ISSN: 1988-2416,1885-5687
DOI: 10.5209/esim.62772