On March 4, 2025, Aylmer’s Swan Line calendar recorded zero swans. Its accompanying note reported about 650 northwest of town.
The two numbers were not a mistake. The note explained that the birds had not yet landed in the Aylmer Wildlife Management Area. The calendar was reporting that site, not every swan within reach of Aylmer. [1]
Where is this place?
Aylmer, Ontario — community orientation, not a live swan location or feeding instruction. This map locates the town or region, not a verified exact historic event site.
A visitor needed the local answer, not an impressive regional total.
A museum passes on a moving picture
The Tundra Swan Line began in 1985. Its work is shared: Elgin Stewardship Council volunteers feed and monitor the birds at the wildlife area, while museum volunteers update the recorded telephone messages with counts and conditions. Eastlink supplies the line. The museum explicitly says that it does not operate the wildlife area. [1]
The museum makes the count available beyond the viewing stand.
The council’s March 2022 migration notice described feeding by local volunteers early each morning once the swans arrived. It also described regular updates to the information line and notifying local media of the birds’ arrival. Those were arrangements for that season, not a timetable guaranteed for every future spring. [2]
When a small count needed an explanation
A year earlier, the museum had faced a longer run of disappointing numbers. Its March 27, 2024 update reported a peak of 386 swans that season, compared with 4,300 in 2023. It turned to the stewardship council’s Ron Casier, then identified as wildlife area manager and council director, for context. [5]
The account offered possible explanations involving the mild winter, earlier movements and altered routes. It presented the council’s explanation as speculation, not as a demonstrated account of every missing bird. Casier also recalled 2019, when maintenance had required water to be drained from part of the site. [5]
The distinction between the count and its explanation mattered. Volunteers could report fewer birds with much more confidence than they could reconstruct all the journeys that produced that result.
The stopover has to be maintained
The birds are wild; the place attracting them is deliberately managed.
Ducks Unlimited Canada describes the site’s earlier life as a Second World War airfield, followed by the creation of wildlife habitat. Its January 2019 project account records another round of work during 2018: rebuilding Tundra Pond and adding six acres of wetlands. DUC designed the new wetlands, with the stewardship council overseeing them. [3]
The organization described improved plant growth and feeding habitat as expected benefits. A construction account is not, by itself, proof of how many extra birds subsequently arrived. What it does establish is that the stopover needs work beyond opening a viewing stand in spring. [3]
The Important Bird Area profile supplies another part of the explanation. It describes planted crops intended to draw swans and geese into the site rather than neighbouring farms, along with shallow artificial ponds. A concentration of birds is therefore connected to decisions about food, water and neighbouring land—not just the calendar. [4]
A daily number is not a season’s population
The same bird-area profile distinguishes a one-day peak from the number of swans using the site over an entire migration. Its historical account says that turnover rates had not been determined. Birds arriving and leaving make those two measures different. [4]
Adding daily counts would not, without a way to identify repeat visitors, establish how many individual swans passed through. Nor does a zero at the wildlife area mean the birds are absent from the broader area; the same day’s note reported about 650 nearby. These are limits of what the count describes, not reasons to dismiss it.
The useful answer is the one tied to the place being counted, even when the flock is elsewhere.
That is why the zero belongs in the story.