نتایج جستجو برای: the hunchback sparrow

تعداد نتایج: 16052956  

2008
IRENE A. LIU BERNARD LOHR BRIAN OLSEN RUSSELL GREENBERG

Variation in song can play a central role in species and subspecies recognition among birds. The ability of individuals to distinguish between songs of their own versus songs of a different subspecies potentially strengthens local adaptation of subspecific populations. We investigated the degree of vocal divergence and discrimination between two subspecies of Swamp Sparrow (Melospiza georgiana)...

Journal: :The Journal of experimental biology 2016
Yan-Feng Sun Zhi-Peng Ren Yue-Feng Wu Fu-Min Lei Robert Dudley Dong-Ming Li

Limits to flight performance at high altitude potentially reflect variable constraints deriving from the simultaneous challenges of hypobaric, hypodense and cold air. Differences in flight-related morphology and maximum lifting capacity have been well characterized for different hummingbird species across elevational gradients, but relevant within-species variation has not yet been identified i...

2013
Kay Ousterhout Patrick Wendell Matei Zaharia Ion Stoica

Large-scale data analytics frameworks are shifting towards shorter task durations and larger degrees of parallelism to provide low latency. However, scheduling highly parallel jobs that complete in hundreds of milliseconds poses a major challenge for cluster schedulers, which will need to place millions of tasks per second on appropriate nodes while offering millisecond-level latency and high a...

Journal: :Japanese Journal of Ornithology 1937

Journal: :Walt Whitman Quarterly Review 2015

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