A monarch butterfly tagged with a radio tracker in Winnipeg this summer has completed its migration to Mexico, covering about 2,300 kilometers in just over five weeks. Out of the 29 butterflies initially tagged by researchers from Assiniboine Park Zoo and Environment Canada, at least three did not survive their journey out of Manitoba. The successful migration of MB26011 highlights the challenges monarchs face during their perilous journey, including weather conditions, predators, and human-made obstacles.
Written locally by qwen2.5:14b on 2026-10-09,
using this article's own text rather than the other coverage of the
same event (that is the story summary below).
Story summary
The first of 29 monarch butterflies tagged with tiny radio trackers in Winnipeg this summer has successfully completed its perilous migration to Mexico. This MB26011 butterfly, named by researchers, traveled approximately 2,300 kilometers over a period of about 40 days, crossing into northern Mexico five weeks after being released from the Assiniboine Park Zoo in Winnipeg.
Researchers tagged the butterflies with toothpick-sized solar-powered radio tags this summer as part of a conservation project aimed at understanding the threats these endangered species face during their migration. The team tracked each butterfly's movements using the Project Monarch app, observing significant challenges like dodging predators and avoiding vehicle collisions en route to their wintering grounds in Mexico.
Conservationists hope that tracking these butterflies will provide valuable insights into the dangers monarchs encounter on their journey, helping to inform conservation efforts for this critically important species.
Written for “Monarch Butterfly Migration” on 2026-10-09,
grounded in this article and the 0 other(s) covering the same event.
1st of 29 monarch butterflies tagged on Canadian Prairies reaches Mexico after perilous migration
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1st → tag → migration
Journey continues for most of the butterflies tagged in Winnipeg this summer, but some aren't going to make it
The first of more than two dozen endangered monarch butterflies tagged with toothpick-sized radio trackers this summer has made it to Mexico to overwinter, a mere five weeks after fluttering off from Winnipeg.
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first → continue → Winnipeg
A butterfly with the decidedly sciency-sounding moniker "MB26011" accomplished the physical feat Tuesday, when she crossed the northern Mexico border, dodging predators and vehicle collisions during the perilous five-week migration.
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she → accomplish → migration
"She's done about 2,300 kilometres in about 40 days.
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She → do → days
It's really incredible," said Laura Burns, the conservation program manager at the Assiniboine Park Zoo in Winnipeg.
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Burns → say → Winnipeg
"I think it's one of the most incredible migration stories in the animal kingdom.
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it → think → kingdom
That's why people are so enamoured with monarchs, because it's a truly remarkable feat that they accomplish."
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they → accomplish → that
Laura Burns, conservation programs manager at the Assiniboine Park Zoo, sits on a butterfly bench at the zoo's pollinator garden on Thursday.
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Burns → sit → Thursday
She hopes the data researchers glean from the trackers helps them identify key stopover spots so they can better protect those areas.
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they → hop → areas
Burns worked along with Environment and Climate Change Canada researchers and staff at the Living Prairie Museum — a tall-grass prairie preserve in Winnipeg — to tag 29 monarch butterflies there from Aug. 26-27.
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Burns → work → Aug.
The Manitoba effort, spearheaded by Environment Canada, marked the first time monarchs were tagged west of Ontario.
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monarchs → spearhead → Ontario
As they bopped from flower to flower over two days, the team nabbed the butterflies with nets and then — very gingerly — pinned them down, dabbed them with eyelash glue, stuck the solar-powered radio tags on and set them free.
Conservation researchers and members of the public have been tracking their movements on the Project Monarch app ever since.
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researchers → bop → app
The trackers ping as the monarchs fly by radio telemetry towers between Canada and Mexico.
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monarchs → ping → Canada
At least three of the 29 Manitoba monarchs appear not to have made it out of the province.
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three → appear → province
Their tags fell off or otherwise stopped sending signals.
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tags → fall → signals
Those casualties may tell researchers something about the myriad threats the delicate butterflies face.
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butterflies → tell → threats
Monarchs were listed as endangered in Canada a few years ago under the federal Species at Risk Act, largely due to habitat destruction associated with agriculture and other human activity.
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Monarchs → list → agriculture
Several other butterflies still on the wing appear to show just how gritty the showy creatures can be.
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creatures → appear → wing
For MB26011 to make it into Mexico, she would've also had to have gotten a little lucky.
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she → make → Mexico
"Not only is it a really far distance, and she needs the energy to fly that far, the weather would've had to have been on her side as well," said Burns.
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Burns → need → side
"Then you factor in other conservation concerns like big agricultural fields or cities, cars, predators....
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you → factor → fields
It's really remarkable not only that she went so far, but that she managed to navigate all of those obstacles.
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she → go → obstacles
"
A monarch caterpillar chows down on swamp milkweed leaves at the Living Prairie Museum in August. (Bryce Hoye/CBC)
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caterpillar → chow → August
While MB26011 has made it across two borders already, she still has a few hundred kilometres to go until she reaches the oyamel fir forests in central Mexico, where she'll meet up with scores more of her kind.
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she → make → kind
Once there, she'll have a few good bacchanalian months breeding with the rest, then die.
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she → have → rest
Come spring, the next generations will do the pilgrimage she did in reverse, and arrive back on the Canadian Prairies.
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she → Come → Prairies
But that long winter resting, suckling on sweet flowers and mating isn't yet guaranteed for the rest of the Manitoba 29.
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resting → suckle → Manitoba
Data from Project Monarch and Environment and Climate Change Canada shows the migration path of two of the 29 butterflies tagged in Manitoba — Eddie, who was southwest of Kansas City as of Thursday, and MB26011, who made it to Mexico on Tuesday.
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who → show → Tuesday
Eddie, one of the butterflies CBC News documented being tagged and released in August, was just southwest of Kansas City as of Thursday.
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News → document → Thursday
He has another 1,700 kilometres or more to go.
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He → have → kilometres
Burns hopes the data gleaned from the trackers helps Canadian researchers identify key stopover spots along the migration pathway, so that they can collaborate with experts in other jurisdictions to better protect those areas moving forward.
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they → hop → areas
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