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Q: What’s the difference between bird songs and bird calls? [L.R., Santa Clara A: Bird song, usually produced by the male, is an advertisement of territory and breeding availability, and, in most species, is limited to the breeding season. As … Read more
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The Pacific Coast north of San Francisco is justly renowned for its scenic beauty. It is also geology writ large, where evidence of powerful forces still at work on our region is exposed at many places. Goat Rock State Beach … Read more
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A hike on the Hazelnut Trail at Montara Mountain leads you through several scrub communities and straight into a botanical puzzle.
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The vast expanse of rugged country east of high-tech Santa Clara Valley, crowned by the Bay Area’s highest peak, has been a refuge for wild species—humans included—for a very long time.
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The oak-dotted, rounded hills of Contra Costa and eastern Alameda counties are a familiar sight, but do you know how they got to be that way?
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One measure of the ecological richness of the Bay is its role as a major nursery for five resident species of sharks.
At the precise moment we are looking at them, flowers are sending light rays back to us. But not all of them are sending us the same kind of light in the same way. The different colors are different wavelengths … Read more
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On the edge of the tidal marsh fringing Suisun Slough, a streaky dark-brown sparrow gleans seeds of tules and other rushes from the exposed mud. A shadow passes: a northern harrier, cruising for mice. The sparrow vanishes into a tangle … Read more
For most of the nearly four years it has taken to turn BAY NATURE from an idea into the magazine you now hold in your hands, I worked out of my house in north Berkeley. Could be worse: there’s a … Read more
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Lake Merritt changed dramatically over the centuries, but it still supports estuarine habitat — in addition to the recreation needs of a growing city.
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