You have asked a very good question. The season can begin no sooner that late April in Maine because the black fly larvae, which hatch in clear running streams, do not hatch until everything thaws and the water temperature has also risen a bit. The black fly season moves, in general, from South to North and simultaneously from the coastal plain to inland areas and from lowest elevations up to the highest. So there is no precise "end" to black fly season in Maine. However by mid-July in most places after the birds have start gobbling them up, and after the black fly adults have bred for the season and go into "dormancy", the numbers dwindle drastically almost everywhere.
Here are some more key pieces of information, as a further general answer to your question:
Black flies breed in running water, unlike mosquitoes, which breed in still water. Because there are about forty species, not all flourish at the same time.
Black flies can travel several miles from their breeding site, so those environmental rules cannot be counted on completely, as a means to avoid them.
Strong breezes tend to disperse them, as they are a very small insect.
I have found, and others confirm, that black flies are generally inactive until the air temperature has risen to at least 50 degrees F., even in black fly season.
I have also found that they seem less numerous at higher altitudes, probably because of a combination of the above three factors: the lack of expansive breeding sites, cooler temperatures and the more consistent presence of breezes.
"Black flies are strongly influenced by color -- they find dark hues more attractive than pale ones, and blue, purple, brown, and black more attractive than white or yellow. A light-colored shirt, therefore, is a much better choice of clothing than a dark blue one. It is a moot point, however, whether blue jeans might not be better than pale trousers: if they are carefully tucked in at the ankles and are without holes, jeans may help to attract the flies away from the head region.": Courtesy Rocco Moschetti, IPM of Alaska. 1
"Black flies often swarm around a person's head because they are attracted to carbon dioxide in the breath. ... Bites are concentrated on exposed areas of skin, especially along the hairline, feet, ankles and arms." Courtesy Jeffrey Hahn, University of Minnesota Extension Service. 2
"The bites can produce a variety of reactions ranging from little or no irritation to considerable irritation and swelling. Sensitivity varies from person to person." Courtesy Jeffrey Hahn, University of Minnesota Extension Service. 2
In general, unlike mosquitoes, they will not come indoors, nor fly at night, nor penetrate most clothing.
Local variation is the rule. Local people are usually the most helpful resource, as they observe these things very carefully.
2006-09-24 13:18:31
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answer #1
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answered by Anonymous
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Most major international airports have airlines that operate to every continent in the world. To name a few: Chicago's O'hare, New York's JFK, Charles de Gaulle in Paris, LAX in Los Angeles, Hartsfield Atlanta, London Heathrow, Sydney International, etc... It mostly depends on which airlines operate out of that airport.
2016-03-27 07:40:37
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answer #2
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answered by Anonymous
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Ask your doctor about an exercise routine. Regular exercise, such as walking three times a week, may reduce neuropathy pain, improve your muscle strength and help control blood sugar levels. Gentle routines such as yoga and tai chi might also help.
2016-05-16 09:51:14
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answer #3
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answered by Andrew 2
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Kill the flies, clean behind your mirror and any pictures and behind your furniture, the little flies have just hatched from maggots........
2006-09-24 12:03:47
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answer #4
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answered by tattie_herbert 6
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