Every September, tens of thousands of hawks funnel through southern Ontario on their way south, and for a few weeks the skies over a handful of specific vantage points turn into one of the best wildlife spectacles in the country. If you've never been to an organized hawk watch, mid-September is the single best window to start, and Ontario happens to have one of the top fall raptor sites in all of North America.
Why Southern Ontario Funnels Raptors
Most migrating hawks rely on rising columns of warm air, called thermals, to gain altitude without flapping, and thermals don't form over open water. That means raptors avoid crossing the Great Lakes whenever possible, instead following the shoreline until the lake narrows enough to cross or until the shoreline itself funnels them into a concentrated path. Southern Ontario sits at exactly this kind of pinch point between Lake Erie, Lake Ontario, and Lake Huron, which is why a handful of specific shoreline locations here produce raptor numbers far out of proportion to the surrounding landscape.
Holiday Beach: Canada's Top Fall Hawk Watch
Holiday Beach Conservation Area, on the north shore of Lake Erie near Amherstburg, is where this funneling effect is most dramatic. The Holiday Beach Migration Observatory (HBMO), a volunteer nonprofit formed in 1986, has run a daily hawk count from a 40-foot wooden tower here every fall since 1974, one of the longest-running hawk migration datasets in North America. National Audubon has ranked the site first in Canada and third in all of North America for raptor viewing.
The signature event is the broad-winged hawk migration in mid-September. Unlike most other raptors, broad-winged hawks move through in a tight window, often just a week or so, in large circling flocks called kettles that can number in the thousands. Holiday Beach set the single-day record for the species with nearly 95,500 broad-winged hawks counted in one day in mid-September. On a good kettle day, the sky can genuinely fill with birds spiraling upward on a thermal before streaming off to the south.
Broad-wings aren't the only species. Over the length of a typical fall count season, which runs September 1 through November 30, Holiday Beach regularly tallies large numbers of turkey vultures, sharp-shinned hawks, and American kestrels earlier in the season, with red-tailed hawks, red-shouldered hawks, and bald eagles becoming more prominent as the season goes on into October and November. Golden eagles and rough-legged hawks tend to show up latest, into the final weeks of the count.
The site also hosts an annual Festival of Hawks each September, with live hawk displays, bird banding demonstrations, and identification talks from experienced counters, timed to coincide with the peak of the broad-winged hawk push.
What You'll See and When
Early September brings the first wave of sharp-shinned hawks, American kestrels, and ospreys. Mid-September is broad-winged hawk season, the single most concentrated and dramatic period of the entire count. Late September into October shifts toward red-tailed hawks, red-shouldered hawks, and northern harriers, with bald eagles becoming more regular. By November, the count winds down with the latest migrants: golden eagles, rough-legged hawks, and the last stragglers of the season.
The Niagara Peninsula: A Real Corridor, But a Spring Show
The Niagara Peninsula sits at a similar geographic pinch point, between Lake Erie and Lake Ontario, and raptors funnel through here for the same reason they do at Holiday Beach. Worth knowing before you plan a trip, though: the organized count here, run by the Niagara Peninsula Hawkwatch from Beamer Memorial Conservation Area in Grimsby, is a spring-only program, counting from March 1 to May 15 each year, and has been since 1975. It's one of the best spring raptor counts in Canada, but there is no equivalent organized fall count at Beamer.
That doesn't mean raptors skip the Niagara Peninsula in fall, the geography that concentrates them in spring is the same geography in September and October. It just means a fall visit to Beamer is more of an independent outing than an organized hawk watch experience, without a count tower staffed by experienced spotters or the crowd of fellow birders you'd find at Holiday Beach during peak season. If a true fall hawk-watching event is what you're after, Holiday Beach is the destination to build a trip around.
Gear for Hawk Watching
A pair of binoculars is essential here, since even large kettles are often distant and gaining altitude fast. Our guide to the best binoculars for beginner birders in Canada covers solid entry-level options if you don't already have a pair. Beyond binoculars, dress warmer than you think you'll need, hawk towers are exposed to wind off the lake, and a folding chair makes a multi-hour watch far more comfortable than standing the whole time.
Frequently Asked Questions
When is the best time to see hawk migration at Holiday Beach? Mid-September is the peak, driven by the broad-winged hawk migration, which typically passes through in a concentrated week or so. The overall count season runs from September 1 through November 30, with different species peaking at different points along the way.
Can you watch fall hawk migration at the Niagara Peninsula? Raptors do move through the Niagara Peninsula in fall, since the geography funnels them the same way it does in spring, but the organized Niagara Peninsula Hawkwatch count at Beamer Memorial Conservation Area only runs in spring, from March 1 to May 15. A fall visit there is an independent outing rather than a staffed hawk watch.
Do I need a scope or just binoculars for hawk watching? Binoculars are the essential piece of gear, since most raptors pass at a distance and in flight rather than perched. A scope can help pick out distant kettles just forming, but it's not required to have a great day of hawk watching.
What is a hawk "kettle"? A kettle is a group of raptors, most often broad-winged hawks, circling together within a single rising thermal to gain altitude before gliding off toward their next thermal. Kettles can range from a handful of birds to several thousand during peak broad-winged hawk migration.
Final Thoughts
Hawk migration watching rewards showing up at the right place during a fairly narrow window, and Holiday Beach in mid-September is about as good as that window gets anywhere in the country. Bring binoculars, dress for wind off the lake, and give yourself a few unhurried hours watching the sky. For the full picture of everything else moving through Canada at the same time of year, see our guide to fall bird migration in Canada.