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Their population is in serious decline, so their breeding colonies are monitored by biologists. I raised them, banded them and released them back to their colony site that summer. “But lets see … I’d say one of my most memorable releases is that of a Purple Martin , a species of special concern in California.
On the breeding grounds of the north, a small bird flies into the night, takes a bearing for the south, gains altitude and flies onward. Had birders and hikers heard its ethereal song in deciduous forests of southern Illinois? Migrant birds make an incredibly perilous journey, twice per year. The equation seems incredible.
He reasons out answers to both questions, finally stating that, despite what many eyewitnesses wrote, the birds had to have laid more than one egg and that the birds had to have nested more than once a breeding season. Avery’s trip through Kentucky, Ohio, Illinois, Wisconsin, Michigan, Pennsylvania and New York holds more promise.
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