Ottawa Nature Lovers, Your Phone Is Now a Research Tool
Ottawa sits squarely on the monarch butterfly's ancient migration corridor, and this spring, the fluttery orange-and-black visitors passing through your backyard garden could be part of the most detailed migration study ever conducted, with your smartphone playing a supporting role.
A landmark new project has tagged 160 monarch butterflies across Mexico's six butterfly sanctuaries with cutting-edge transmitters, giving researchers their most granular look yet at the first leg of the insects' epic journey back north. And citizen science apps mean everyday people, including Ottawans, can log sightings that feed directly into the data.
The Tech Behind the Tags
The transmitters being used are a significant step up from earlier tagging methods. Rather than relying solely on paper tags that require someone to physically recapture a butterfly and mail in a report, the new hardware communicates wirelessly, allowing researchers to track movement patterns in near real-time.
The data captured during this first leg, from the wintering grounds in the mountains of Michoacán, Mexico, northward, is expected to fill major gaps in scientists' understanding of how monarchs navigate. They're thought to use a combination of the sun's position, magnetic fields, and even polarized light, but the precise mechanics remain one of nature's great unsolved puzzles.
Where Ottawa Fits In
Ottawa and the surrounding Ottawa Valley are well-known stopover zones for monarchs during their fall migration south and their spring return north. Local naturalists with organizations like the Ottawa Field-Naturalists' Club regularly document sightings at spots like Shirley's Bay, the Mer Bleue Bog, and green corridors along the Ottawa River.
Citizen science platforms like iNaturalist and Journey North actively collect monarch sightings from the public, and the data logged here in Ottawa helps scientists stitch together the full picture of the migration route. Every sighting you record, date, location, photo, becomes a data point that researchers can cross-reference with the transmitter-tagged butterflies moving north from Mexico.
If you've got milkweed growing in your yard (the only plant monarchs will lay eggs on), you're already contributing to the species' survival. Adding a sighting log to your routine this spring could make you part of the most comprehensive monarch study to date.
What You Can Do
Want to get involved? Here's how Ottawa residents can contribute:
- Download iNaturalist or Journey North and log any monarch sightings starting in late May through September
- Plant milkweed: native species like common milkweed (Asclepias syriaca) are ideal for Ottawa's climate
- Check with the Ottawa Horticultural Society and local conservation groups for monarch waystation certification programs
- Visit Shirley's Bay or Britannia Conservation Area during peak migration (late August–September) for the best sighting opportunities
The science is genuinely exciting: researchers hope this season's transmitter data will finally explain why monarch populations, which have declined dramatically over recent decades due to habitat loss and climate change, seem to be recovering in some years and not others.
Your backyard, and your phone, could help answer that question.
Source: CBC News. Original reporting by CBC Technology.
