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Tiny tracker following monarch butterflies during California migration

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Tiny tracker following monarch butterflies during California migration


SAN FRANCISCO (KGO) — When this monarch butterfly hits the sky it won’t be traveling alone. In fact, an energetic team of researchers will be following along with a revolutionary technology that’s already unlocking secrets that could help the entire species survive.

“I’ve described this technology as a spaceship compared to the wheel, like using a using a spaceship compared to the invention of the wheel. It’s teaching us so, so much more,” says Ray Moranz, Ph.D., a pollinator conservation specialist with the Xerces Society.

Moranz is part of a team that’s been placing tiny tracking devices on migrating monarchs. The collaboration is known as Project Monarch Science. It leverages solar powered radio tags that are so light they don’t affect the butterfly’s ability to fly. And they’re allowing researchers to track the Monarch’s movements in precise detail. With some 400 tags in place, the group already been able to get a nearly real time picture of monarch migrations east of the Rockies, with some populations experiencing dramatic twists and turns before making to wintering grounds in Mexico.

“They’re trying to go southward to Mexico. They can’t fight the winds. Instead, some of them were letting themselves be carried 50 miles north, 100 miles north, 200 miles the wrong way, which we are all extremely alarmed by and for good reason. Some of these monarchs, their migration was delayed by two or three weeks.

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According to estimates, migrating monarch populations have dropped by roughly 80% or more across the country. And the situation with coastal species here in California is especially dire. Blake Barbaree is a senior scientist with Point Blue Conservation Science. He and his colleagues are tracking Northern California populations now clustered around Santa Cruz.

MORE: Monarch butterflies to be listed as a threatened species in US

“This year, there’s it’s one of the lowest, populations recorded in the winter. And the core zones have been in Santa Cruz County and up in Marin County. So we’ve undertaken an effort to understand how the monarchs are really using these different groves around Santa Cruz by tagging some in the state parks around town,” Barbaree explains.

He says being able to track individual monarchs could help identify microhabitats in the area that help them survive, ranging from backyard pollinator gardens to protected open space to forest groves.

“So we’re really getting a great insight to how reliant they are on these big trees, but also the surrounding area and people’s even backyards. And then along the way around the coast, how they’re transitioning among some of these groves. And we’re looking for some of the triggers for those movements. Right. Why are they doing this and what’s what’s driving them to do that? So those questions are still a little bit further out as we get to analyze some more some more of the data,” he believes.

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And that data is getting even more precise. The tags, developed by Cellular Tracking Technologies, can be monitored from dedicated listening stations. But the company is also able to crowdsource signals detected by cellphone networks on phones with Bluetooth connectivity and location access activated. And they’ve also helped develop an app that allows volunteers, citizen scientists, and the general public to track and report Monarch locations themselves using their smartphones.

CEO Michael Lanzone says the initial response has been overwhelming.

MORE: New butterflies introduced in SF’s Presidio after species went extinct in 1940s

“We were super surprised to see 3,000 people download the monarch app. It’s like, you know, but people really love monarchs. There’s something that people just relate to,” says Lanzone who like many staffers at Cellular Tracking Technologies, has a background in wildlife ecology.

A number of groups are pushing to have the monarchs designated nationally as a threatened species. If that ultimately happens, researchers believe the tracking data could help put better protections in place.

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“They’re highly vulnerable to, you know, some of the different things that that that we as humans do around using pesticides and also potentially cutting, you know, cutting down trees for various reasons. Sometimes they’re for safety and sometimes it’s, you know, for development. But so having an understanding of how we can do those things more sensibly and protect the places that they need the most,” says Point Blue’s Barbaree.

And it’s happening with the help of researchers, citizen scientists, and a technology weighing no more than a few grains of rice.

The smartphone app is called Project Monarch Science. You can download it for free and begin tracking.

Copyright © 2025 KGO-TV. All Rights Reserved.



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California Highway Patrol work to keep drivers safe during holiday weekend enforcement

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California Highway Patrol work to keep drivers safe during holiday weekend enforcement


The California Highway Patrol is urging drivers to stay focused on the road as they head out for Fourth of July celebrations.

The holiday weekend can be a dangerous time on our roads as millions of drivers are expected to travel.

CHP Officer Jorge Toro joined Eyewitness News Mornings to share how drivers can stay safe behind the wheel.

Officer Toro also highlighted the importance of sober driving over the holiday.

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He says anyone hosting a party should make sure all of their guests get home safely, ensuring anyone who may be impaired doesn’t drive.



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California returns stretch of coast to Indigenous tribes. ‘This is beyond huge’

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California returns stretch of coast to Indigenous tribes. ‘This is beyond huge’


California is returning a stretch of rugged Mendocino County coast to the Indigenous nations whose ancestors once stewarded its shores.

State transportation officials recently approved the transfer of Blues Beach and the surrounding bluffs to Kai Poma, a nonprofit founded by representatives of the Sherwood Valley Band of Pomo Indians, Round Valley Indian Tribes and Coyote Valley Band of Pomo Indians.

The transfer of 136 acres just south of the community of Westport will mark the first time land managed by the California Department of Transportation has been returned to Indigenous tribes.

“This is beyond huge,” said J. Carlos Rivera, tribal chairman of the Sherwood Valley Band of Pomo Indians. “It’s enormous from our tribal perspective that we are basically obtaining the land that our people once lived on before colonization.”

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California purchased the swath of rocky cliffs and windswept shoreline in the 1960s to expand the construction of Highway 1 and create a scenic viewpoint for highway travelers, according to a California Coastal Commission report.

More recently, public access has been largely unregulated, and summer weekends and holidays have drawn large groups who camp and party on the beach, at times driving through sensitive areas, damaging cultural sites and leaving behind trash, the report states.

Kai Poma plans to conduct cultural and archaeological resource studies and environmental surveys and then prepare a resource management plan for the property, according to planning documents. The nonprofit and the Coastal Commission have drafted a public access management plan that states the land will be open from sunrise to sunset.

Rivera described the entire property as a sacred site. The coastal waters are used by tribal people for seaweed and abalone gathering, and the shores host youth cultural camps, he said. “Protecting the land, it has a deeper meaning for us because we’re connected to the land,” he said.

The effort to acquire the land took years — and required a change in state law. Caltrans lacked the ability to transfer land to tribal governments until 2021, when Gov. Gavin Newsom signed a bill sponsored by state Sen. Mike McGuire (D-Healdsburg) that enabled the transfer, according to a news release issued at the time. The law also bars commercial activity on the property and requires public access be maintained.

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“With 136 acres now officially transferred into tribal stewardship, one of the most spectacular stretches of the Mendocino Coast will be forever protected,” McGuire said in a statement.

“This agreement, the first of its kind in California, gives these three dynamic Native American tribes the rightful opportunity to reclaim sacred lands and cultural traditions on this special piece of earth. And it’s about damn time.”

The land transfer cleared its last regulatory hurdle June 26 with the approval by the California Transportation Commission, said Neil Thapar, an attorney who works as an advisor and legal consultant to Kai Poma. Caltrans staff will next record the deed transferring the title from the state of California to Kai Poma, which is expected to happen any day, he said.



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What’s open, closed for Independence Day weekend in California?

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What’s open, closed for Independence Day weekend in California?


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With July 4 falling on a Saturday this year, many businesses and organizations are taking the day off Friday, July 3, to mark America’s 250th birthday. From banking to mail service, here’s what’s open and closed for the holiday weekend.

Most federal offices closed, mail service to continue

Non-essential federal offices will be closed on July 3. However, mail service will continue as normal, and post offices are scheduled to remain open.

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Most California government offices to remain open

Most California government offices will be open on July 3, with some exceptions.

DMV offices throughout the state will be open. However, the Employment Development Department will be closed.

DMV offices that offer Saturday hours will be closed on July 4.

Private parcel services to remain open

UPS and FedEx are both scheduled to operate normally on July 3, but will suspend service on July 4.

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Stock markets closed

Both the New York Stock Exchange and Nasdaq will be closed on July 3.

Most banks to stay open

While most banks were expected to operate normally on July 3, some may operate under modified holiday hours. All banks will be closed on July 4.

Online banking services should remain operational.

Grocery stores

Most major grocery chains will be open on both July 3 and July 4. Trader Joe’s locations will be open for regular business on July 3 but will close early at 5 p.m. on the Fourth of July.

Retailers

Many major retail stores, such as Walmart and Target, plan to operate under normal business hours on both July 3 and 4. All Costco warehouse stores operate under normal business hours on July 3, but will close on July 4.

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Restaurants

Most major restaurant chains remain open on July 4, but some will have limited hours. All Raising Cane’s locations will close on July 4.



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