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Request Tags

Here's what to do if you need tags.

Tagging season begins August 1, but we also have special programs to monitor breeding monarchs and overwintering monarchs.

We provide free tags to citizen scientists tagging wild monarchs in the southwestern United States. Our tagging area includes Arizona, Utah, Nevada, New Mexico, western Colorado and the California deserts.

New to tagging for the Southwest Monarch Study? Go to this page.

Tagged for Southwest Monarch Study before? Please submit your data before requesting more tags.


Please contact us by email at the address below with the following information:

  • Number of tags.
  • Your mailing address.
  • Your phone number--if any of your tags are recovered, we will contact you first.
  • NEW Download and read Covid-19 Southwest Monarch Study Field Requirements
  • By requesting tags from Southwest Monarch Study, you agree to the following terms:
    • I will not give my tags to anyone else.
    • I will send data reporting the monarchs I tagged in a timely fashion (see below)
    • I will not provide any tagging data to anyone outside of Southwest Monarch Study. (Believe it or not, people not affiliated with SWMS have contacted our taggers and requested tag numbers, dates, locations, etc. Others have tried to modify our tagging protocol to include sharing our information with other organizations. If anyone contacts you, please notify us immediately and tell them to contact us directly.)
  • Data Policy
    Read our Data Policy here
  • Add this statement to your email requesting tags: "By requesting these tags, I agree to the Southwest Monarch Study terms and COVID-19 field requirements."

Please take a few minutes to review our newly updated Tagging Monarchs and let us know if you have any questions.

To request tags, just email


Submitting Data

Please submit your data frequently as you tag. We need it to contact you when someone reports your tagged monarch. There are two ways to do this:

  • Email us a completed excel spreadsheet. Use one of these so we can merge it into our master database.
  • If you have an iPhone or iPad, you can use Nature Digger's Monarch SOS free app. It is easy to use. Look for Monarch SOS to be available soon for Androids.

We Are Blue!

Starting with its inception in 2003, the Southwest Monarch Study used blue tags. We switched to white tags from 2012 to 2014 to help with recoveries in Mexico. In 2015 we returned to blue tags. Sometimes a tagged monarch is seen at a great distance so the number cannot be read. When this happens, we can tell it's a Southwest Monarch Study tag by its blue color.

To request tags, just email


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