When Do Black Flies Start in Ontario?

If you’re wondering when do black flies start in Ontario, it is important to know that they typically begin biting from mid-May to early June. The length of the season depends on how much rain falls, and whether there are small streams or creeks that run through the area.

Black flies are a common nuisance throughout much of Canada. There are over 160 different species and most fly as adults during the spring and early summer. Most black flies feed on birds, but only four species are known to bite people. Adult black flies are mostly black in colour, though some are yellow or orange.

Black flies are best avoided during this season. These pesky insects are more active at dawn and dusk. They prefer moist, swampy areas. While black flies may seem annoying, they are an integral part of the ecosystem in Northern Ontario. By planning ahead, you’ll be more likely to avoid encountering these pesky insects.

The black fly is a nuisance, and not just because it bites humans. Their larvae feed on flower nectar and may also feed on birds and mammals. While they don’t spread disease, black flies can cause minor wounds, black fly fever, and small, painful bites.

Continue reading:

How Many Babies Do Flies Make? How Many Flies Die a Year? How Are Flies Getting in My Window? How High Do Flies Usually Fly? How Do Flies Detect Movement? How Old Are Flies? How Does Flies Die in the Winter? Do Flies Serve Any Purpose?