Ruby-throated Hummingbirds in Wisconsin

Ruby-throated Hummingbirds are summer residents in Wisconsin, arriving shortly before nesting begins in June and leaving after the young are independent. Through the season they feed on nectar from tubular red and orange flowers; gnats, mosquitoes and small spiders.

Humid continental, with two Great Lakes shorelines, northern forest and southern prairie-oak savanna.

Across Wisconsin, ruby-throated hummingbirds typically nest from June–August. Nest site: walnut-sized cup of plant down bound with spider silk, saddled on a downward-sloping branch. Females lay 1–3 eggs (usually 2), incubate for 12–14 days, and young leave the nest after 18–22 days.

Warm, humid summers.

• Ruby-throated Hummingbirds don't use nest boxes. Keep dense native shrubs and trees such as trumpet honeysuckle, trumpet creeper for nest sites.
• Delay heavy pruning of shrubs until after August.

Of the regional native plants we track for Wisconsin, these 5 provide food or cover ruby-throated hummingbirds use:

Change nectar every 2 days in hot weather (under 80°F, every 4–5 days) and clean the feeder each refill. Males defend feeders aggressively; several feeders out of sight of each other help.

• Best foods: Sugar water: 1 part white sugar to 4 parts water, no dye.
• Avoid: Honey, brown sugar, artificial sweeteners and red dye.
• In Wisconsin's summer: offer water and insect foods; natural food is abundant.

Full diet breakdown for ruby-throated hummingbirds · Best feeder for ruby-throated hummingbirds