- Hummingbirds are being seen migrating through the city
- Migrating Brown Creepers, Ruby-crowned and Golden-crowned Kinglets appear near the end of the month.
- Eastern Monarch Butterflies continue their migration through Ontario.
- Using their antlers, male Moose start to fight for females.
- Little and Big Brown Bat mating seasons complete
- Final egg laying for the Eastern Monarch Butterfly.
- Blackbird (grackles, cowbirds and redwings) flocks can number in the thousands.
- Robins are in large flocks, feeding on crab apples.
- Broad-winged Hawk migration peaks mid- to late-month.