Nesting on man-made structures by birds in Japan: cases and perspectives
نویسندگان
چکیده
منابع مشابه
Detection of Man-made Structures in Natural Images
Object detection in images is a very active research topic in many disciplines. Probabilistic methods have been applied to the problem with varying degrees of success. A logistic classifier, Markov random field (MRF), and discriminative Random Field (DRF) were used for the detection of man-made structures in natural images. It was found that the MRF and DRF models were often improvements over t...
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An important application of machine vision is to provide a means to monitor a scene over a period of time and report significant changes. Comparing intensity values of successive images is not effective as such changes don’t necessarily reflect actual changes at a site but might be caused by changes in the view point and illumination. We also want to ignore seasonal changes and focus on structu...
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European Starlings ( Sturnus vulgaris ) were introduced to New York City in 1890 and have since become one of North America’s most common species. Starlings are aggressive competitors and commonly usurp cavities of other hole-nesting species. These characters make it a clear choice for a species whose invasion is likely to have significantly affected native cavity-nesting birds. Using Christmas...
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As part of a larger study of wildlife habitat associations in Douglas-fir (Pseudotsuga menziesii) forests of northwestern California, I recorded characteristics of nest sites used by 16 species of cavity-nesting birds. Pacific madrone (Arbutus menziesii) contributed only 8% of the basal area of the stands I studied, but 24% of all cavity nests were in madrone. Although nests were distributed am...
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ژورنال
عنوان ژورنال: Japanese Journal of Ornithology
سال: 2019
ISSN: 0913-400X,1881-9710
DOI: 10.3838/jjo.68.1