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Loon Magic - Wayzata Technology (8011) (1993).iso
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07northw.c
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1993-07-26
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** NORTHWARD BOUND **
Loon Scouts
Perhaps loons utilize a "scouting" system with some birds traveling
to the north, checking out the conditions and reporting back. The
New Hampshire Loon Preservation Committee office has received
numerous reports of loon tremolos heard in early spring when local
lakes are still frozen. "I believe they're flying overhead," explains
Committee director Jeff Fair, "perhaps on reconnaisance flights,
checking for open water. I've seen them flying myself." While the
scouting theory is speculative, it would provide loons with a
mechanism for their otherwise uncanny ability to land on northern
lakes often within hours of ice-out. When Sigurd Olson paddled into
Knife Lake, a large wilderness lake in the Quetico-Superior Canoe
Country, just two days after ice-out, he found loons waiting for him.
For loons, capable of flying over 90 mph, distance is not a major
obstacle. At that speed a loon could travel from a "base camp" in the
open waters of the southern Midwest to the northern nesting lakes in
just a few hours. These flight speeds are impressive. Ducks and
geese, by contrast, migrate at only 45 to 60 mph. Loons do hurry the
spring migration. But then, they have to. Their early arrival to
northern lakes is likely related to the brevity of the summer season.
To secure a territory, find a nest site, lay and incubate eggs, care for
chicks and get the juveniles flying before ice sets, the
adults have few days to waste. The loons' arrival is probably geared
to the ice conditions, not the calendar. If lakes open early, loons will
usually arrive early.
That proposition holds up well in most, but not all, of loon country.
It seems some of New Hampshire's loons are a bit tardy. As a former
director of the New Hampshire Loon Preservation Committee, Scott
Sutcliffe kept close track of spring arrivals. Loons there returned an
average of nine days after the ice left New Hampshire's scenic lakes.
Sutcliffe believes the short distance from New Hampshire's lakes to
ice-free, oceanic wintering areas could be a factor in the late arrival.
*****