By CBC News Ottawa, August 3, 2015
If you've noticed an abundance of pesky deer flies and horse flies buzzing by —
and leaving you with painful bites along the way — it's no surprise given the
wet summer so far in Ottawa. Deer flies, along with the typically larger horse
flies that are part of the same Tabanidae family, thrive in mucky soil and
water, according to Jeff Skevington, a fly researcher at Agriculture and
Agri-Food Canada. via
Deer flies, horse flies having 'good year' in Ottawa due to rain - Ottawa -
CBC News.