International Monarch Monitoring Blitz

The International Monarch Monitoring Blitz invites community scientists from across North America to come together with the shared goal of helping to protect and conserve the beloved and emblematic monarch butterfly. Data collected by volunteers each year support trinational efforts to better understand the monarch butterfly’s breeding productivity, range, and timing in North America.

Join this year’s International Monarch Monitoring Blitz from 25 July to 3 August 2025!

To take part in the Blitz, please share your observations through one of the participating community science programs below:

Canada: 

• Mission Monarch

Mexico:

• NaturaLista
• Correo Real

United States:

• Journey North
• Monarch Larva Monitoring Project
• Western Monarch Milkweed Mapper

Media Release:

• English: Support Monarch Butterfly Conservation
• Español: Conservación de la mariposa monarca
• Français : Appuyez la conservation du monarque

Social Media Posts:

• English: Facebook, Instagram
• Español: Facebook, Instagram
• Français: Facebook, Instagram