Monarchs on the Move!

23 February 2026 | Author: Kristen Baum

It has been an interesting week if you have been following the BlūMorpho tagged monarchs at the overwintering sanctuaries in Mexico! If you aren’t familiar with BlūMorpho tags, the tiny solar radio tags allow the paths of individual monarchs to ...

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Get Ready to Follow the Spring Migration in Real Time

16 February 2026 | Author: Kristen Baum

If you haven’t been following the BlūMorpho tagged monarchs since they reached the overwintering sanctuaries in central Mexico in November, it is time to start watching again by using the free Project Monarch Science mobile app (download via your device’s ...

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Tracking Individual Monarchs with Radio Tags as Part of the Project Monarch Collaboration

17 November 2025 | Author: Kristen Baum

With today's New York Times article (We Can Now Track Individual Monarch Butterflies. It’s a Revelation. 17 November 2025) and press release from Cellular Tracking Technologies (CTT) and the Cape May Point Arts & Science Center (CMPASC), we want to ...

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Radio-tagged monarch MW001 arrives at the MBBR

7 November 2025 | Author: Monarch Watch

Monarch Watch is participating in the Project Monarch Collaboration to deploy BlūMorpho radio tags on monarchs during the fall migration this year. The Project Monarch Collaboration was founded through a partnership between Cellular Tracking Technologies and the Cape May Point ...

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A Remarkable Recovery

31 October 2025 | Author: Monarch Watch

Thank you to everyone who’s been participating in our tagging program this year! This program relies on the participation of many people to tag monarchs and send their data to us, helping us study the monarch fall migration. One of ...

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Does tagging harm monarchs?

18 July 2025 | Author: Kristen Baum

We receive lots of inquiries about monarchs every year, and this is the time of year when we start receiving questions about tagging, including if tagging can harm monarchs. We conducted an experiment last summer to compare survival of tagged ...

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Tag recovery list updated

16 May 2022 | Author: Jim Lovett

More than 900 Monarch Watch tags were recovered from monarch overwintering sites in central Mexico during the 2021 tagging season. All of the tags have been examined and the "Tag recoveries from central Mexico" list has been updated. By default, ...

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Tagging wild and reared monarchs: Best practices

9 July 2019 | Author: Monarch Watch

Greetings taggers and welcome to the 2019 monarch tagging season. This year marks Monarch Watch’s 28th season! Over the years, thousands of taggers have contributed to our tagging database. It is an enormous record and a veritable gold mine of ...

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A Message to all Taggers

3 August 2018 | Author: Chip Taylor

Hear ye! Hear ye! Taggers take note! What you have contributed to monarch science over the years has been incredible! Collectively, you have tagged well over 1.5 million monarchs in the last 26 years, from the front range in Colorado ...

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Tagging results and the monarch decline

2 November 2016 | Author: Jim Lovett

Is the monarch decline due to an increase in mortality during the fall migration? Chip Taylor, Jim Lovett and Ann Ryan Monarch Watch, Kansas Biological Survey, University of Kansas, Lawrence, KS Introduction The authors of three recent papers dealing with the decline in monarch numbers ...

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