SAN FRANCISCO BAY -- In the past 50 years, nearly 30% of the birds in North America, some 3 billion birds, have vanished due primarily to habitat loss, pollution, and now climate change. At the southern edge of the bay surrounded by urban sprawl, native and migratory birds have found a haven on a tiny strip of forest.
'We have these big gaps in our knowledge about the basic life history of a lot of wildlife and to be able to fill in those gaps it's very gratifying.'To date, California has more than 50 Motus stations with antennas strategically placed from the Oregon border to the Salton Sea at the southern end of the state. Souza brought CBS News Bay Area to Grizzly Island, where his group manages the Motus tower there.
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