**We are now accepting orders for 2021 tags. All preorders from January 1–July 21 will be shipped beginning in late July to arrive ahead of the migration in your area. Orders placed after July 21 should arrive within 10-15 business days but priority will be given to preorders and areas that will experience the migration first.**
TAGGING KITS INCLUDE
- Your selected quantity of tags
- Tagging datasheet (also available here to be printed or filled out in Excel or another spreadsheet application)
- Tagging instructions
- Monarch & migration information
ORDERING TAGGING KITS
- **Monarch Watch tags are only shipped EAST of the continental divide**
- Please only order enough tags for your tagging activities this year. Tags are only good for the year they are purchased.
- NOTE: Tagging kits are non-refundable.
- The fall migration season is from August–November. This is the only time of year we ship tagging kits.
See the Shipping Information tab to determine when you can expect your tagging kit to arrive.
WHEN WE SHIP TAGGING KITS
- We only mail tags during the fall migration season.We are not able to mail tags earlier in the year.
- You will receive your kit in time for fall migration in your area. Use the map and chart below to determine your approximate delivery time.
- All preorders from January 1–July 21 will be shipped beginning in late July to arrive ahead of the migration in your area. Not all tags ship at the same time. Orders placed after July 21 should arrive within 10-15 business days but priority will be given to preorders and areas that will experience the migration first.
HOW WE SHIP TAGGING KITS
- Your kit will arrive separately from all other items.
- Tagging kits ship via USPS First Class Mail in brightly colored envelopes without tracking numbers.
- USPS First Class Mail can take 5-7 days to be delivered.
See our main Tagging Page for all details related to our tagging kits.
Please visit our main Tagging Page for complete tagging information, including:
There are two geographically distinct Monarch populations in North America. The eastern population overwinters in Mexico and breeds east of the Rocky Mountains. The western population overwinters along the California coast and breeds in areas west of the continental divide. Contact between eastern and western Monarchs is minimal suggesting that there is little exchange, or what scientists call gene flow, between these populations.
In recent years, several people have transplanted migrating Monarchs between east and west to determine, if for example, western Monarchs introduced in the east would be found in Mexico. Many scientists are concerned about this practice and cite numerous reasons, such as the potential introduction of diseases from one population into another which is why this practice should be stopped immediately.
- Learn more about the western monarch population here.
- Resources, information and links can be found here and here.