Xavi Bou focuses on birds, his great passion, in order to capture in a single time frame, the shapes they generate when flying, making visible the invisible.
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Technology, science and creativity combine to create evocative images which show the sensuality and beauty of the bird’s movements and which are, at the same time, clues for those wishing to identify or recognize them.
Note: Most of these answers pertain to the American Crow, _Corvus brachyrhynchos_. Much of the information here is from my own research on crows in central New York; where I used other sources I have tried to reference the material.
—Dr. Kevin J. McGowan, Cornell Lab of Ornithology.
John Notarianni: Murder Stats: Mapping The Influx of Roosting Crows in Portland (OPB)
Thousands of crows flock to Portland's park blocks each winter, darkening the sky at dusk and roosting overnight in the city's trees. Much about the crows' habits is unknown.
Sarah Vitak: Portland’s Crows Are Back. So Are the Laser-Guided Hawks That Scare Them Off. (Portland Mercury)
From Granger and Provorse’s perspective, the hazing is unwarranted: The crows’ droppings, they say, are barely noticeable, usually gone within a few days due to rain, and that hazing only shifts the location of the droppings to another part of the city. They also feel that the crows deserve to use the city to their advantage and that preventing them from roosting at their chosen sites may be detrimental to the health and survival of the crow population at large. But overall, they object to the hazing not “because we claim to have solid evidence that hazing the crows harms them,” Granger says, but “rather because there is no evidence at all in either direction.”
Welcome to birdWalker, a website of birding photos and trip reports by Bill Walker and Mary Wisnewski, California birders based in Santa Clara County. We've been collecting our trip reports since 1996, we have now recorded 857 trips and 784 species.