ACR 103: California Western Monarch Protection Week.
- Session Year: 2025-2026
- House: Assembly
- Latest Version Date: 2025-09-05
Current Status:
Passed
(2025-09-05: Chaptered by Secretary of State - Res. Chapter 166, Statutes of 2025.)
Introduced
In Committee
Awaiting First Chamber Vote
Passed First Chamber
In Committee
Awaiting Second Chamber Vote
Passed Second Chamber
Enacted
What does this bill do?
This resolution proclaims July 14–18, 2025, as California Western Monarch Protection Week to raise awareness and encourage Californians to support conservation of the western monarch butterfly. It notes the species’ steep population decline and threats like habitat loss, climate change, and certain pesticides, and urges community action to protect monarchs and their habitat.
The summary is provided by generative AI which can make mistakes. For original language, please view the details in the table below.
This measure would proclaim the week of July 14, 2025, to July 18, 2025, inclusive, to be California Western Monarch Protection Week.
This measure would proclaim the week of July 14, 2025, to July 18, 2025, inclusive, to be California Western Monarch Protection Week.
This measure would proclaim the week of July 14, 2025, to July 18, 2025, inclusive, to be California Western Monarch Protection Week.
WHEREAS, The western monarch butterfly is known for its astonishing long-distance annual migration to overwintering habitats along the central coast of California; and
WHEREAS, In late November, western monarchs migrate to the California coast and spend the winter clustering in groves of pine, cypress, and eucalyptus trees; and
WHEREAS, As temperatures warm and daylight hours increase in February, western monarchs mate and migrate inland to lay eggs on emerging milkweeds; and
WHEREAS, Over the past quarter century, the number of monarchs recorded during the peak of the migration season has fallen a staggering 81 percent, from 1,235,490 monarchs to just 233,394 monarchs last year; and
WHEREAS, Monarch populations are declining due to the loss and degradation of breeding, migratory, and overwintering habitat, climate change, and the use of certain herbicides and insecticides that harm milkweed; and
WHEREAS, The United States Fish and Wildlife Service, as of 2024, is proposing protections for the monarch butterfly and encouraging public involvement in its recovery, including the designation of over 4,300 acres in California as critical habitat; and
WHEREAS, California has sought to protect and preserve over 400 western monarch butterfly overwintering sites across the state, including Pacific Grove Monarch Sanctuary, Natural Bridges State Beach, Goleta Monarch Butterfly Grove, and Point Mugu State Park; and
WHEREAS, The western monarch butterfly migration is vital to central coast tourism, generating significant revenue for the state during an otherwise slow season for the tourism industry; and
WHEREAS, Monarch butterflies have emerged as powerful symbols of both biological diversity and the fight for human rights at the United States-Mexico border due to the butterflies migratory nature; and
WHEREAS, Recognition of California Western Monarch Protection Week will have a positive impact by raising public awareness, promoting conservation efforts, and inspiring community action to protect monarch butterflies and their habitats; now, therefore, be it
Resolved by the Assembly of the State of California, the Senate thereof concurring, That the Legislature hereby proclaims the week of July 14, 2025, to July 18, 2025, inclusive, to be California Western Monarch Protection Week; and be it further
Resolved, That the Chief Clerk of the Assembly transmit copies of this resolution to the author for appropriate distribution.
WHEREAS, The western monarch butterfly is known for its astonishing long-distance annual migration to overwintering habitats along the central coast of California; and
WHEREAS, In late November, western monarchs migrate to the California coast and spend the winter clustering in groves of pine, cypress, and eucalyptus trees; and
WHEREAS, As temperatures warm and daylight hours increase in February, western monarchs mate and migrate inland to lay eggs on emerging milkweeds; and
WHEREAS, Over the past quarter century, the number of monarchs recorded during the peak of the migration season has fallen a staggering 81 percent, from 1,235,490 monarchs to just 233,394 monarchs last year; and
WHEREAS, Monarch populations are declining due to the loss and degradation of breeding, migratory, and overwintering habitat, climate change, and the use of certain herbicides and insecticides that harm milkweed; and
WHEREAS, The United States Fish and Wildlife Service, as of 2024, is proposing protections for the monarch butterfly and encouraging public involvement in its recovery, including the designation of over 4,300 acres in California as critical habitat; and
WHEREAS, California has sought to protect and preserve over 400 western monarch butterfly overwintering sites across the state, including Pacific Grove Monarch Sanctuary, Natural Bridges State Beach, Goleta Monarch Butterfly Grove, and Point Mugu State Park; and
WHEREAS, The western monarch butterfly migration is vital to central coast tourism, generating significant revenue for the state during an otherwise slow season for the tourism industry; and
WHEREAS, Monarch butterflies have emerged as powerful symbols of both biological diversity and the fight for human rights at the United States-Mexico border due to the butterflies migratory nature; and
WHEREAS, Recognition of California Western Monarch Protection Week will have a positive impact by raising public awareness, promoting conservation efforts, and inspiring community action to protect monarch butterflies and their habitats; now, therefore, be it
Resolved by the Assembly of the State of California, the Senate thereof concurring, That the Legislature hereby proclaims the week of July 14, 2025, to July 18, 2025, inclusive, to be California Western Monarch Protection Week; and be it further
Resolved, That the Chief Clerk of the Assembly transmit copies of this resolution to the author for appropriate distribution.
WHEREAS, The western monarch butterfly is known for its astonishing long-distance annual migration to overwintering habitats along the central coast of California; and
WHEREAS, In late November, western monarchs migrate to the California coast and spend the winter clustering in groves of pine, cypress, and eucalyptus trees; and
WHEREAS, As temperatures warm and daylight hours increase in February, western monarchs mate and migrate inland to lay eggs on emerging milkweeds; and
WHEREAS, Over the past quarter century, the number of monarchs recorded during the peak of the migration season has fallen a staggering 81 percent, from 1,235,490 monarchs to just 233,394 monarchs last year; and
WHEREAS, Monarch populations are declining due to the loss and degradation of breeding, migratory, and overwintering habitat, climate change, and the use of certain herbicides and insecticides that harm milkweed; and
WHEREAS, The United States Fish and Wildlife Service, as of 2024, is proposing protections for the monarch butterfly and encouraging public involvement in its recovery, including the designation of over 4,300 acres in California as critical habitat; and
WHEREAS, California has sought to protect and preserve over 400 western monarch butterfly overwintering sites across the state, including Pacific Grove Monarch Sanctuary, Natural Bridges State Beach, Goleta Monarch Butterfly Grove, and Point Mugu State Park; and
WHEREAS, The western monarch butterfly migration is vital to central coast tourism, generating significant revenue for the state during an otherwise slow season for the tourism industry; and
WHEREAS, Monarch butterflies have emerged as powerful symbols of both biological diversity and the fight for human rights at the United States-Mexico border due to the butterflies migratory nature; and
WHEREAS, Recognition of California Western Monarch Protection Week will have a positive impact by raising public awareness, promoting conservation efforts, and inspiring community action to protect monarch butterflies and their habitats; now, therefore, be it
Resolved by the Assembly of the State of California, the Senate thereof concurring, That the Legislature hereby proclaims the week of July 14, 2025, to July 18, 2025, inclusive, to be California Western Monarch Protection Week; and be it further
Resolved, That the Chief Clerk of the Assembly transmit copies of this resolution to the author for appropriate distribution.
|
Date
|
Status
|
|---|---|
| Sep 5, 2025 | Chaptered by Secretary of State - Res. Chapter 166, Statutes of 2025. |
| Sep 5, 2025 | Enrolled and filed with the Secretary of State at 3 p.m. |
| Aug 29, 2025 | In Assembly. Ordered to Engrossing and Enrolling. |
| Aug 29, 2025 | Adopted and to Assembly. (Ayes 37. Noes 0. Page 2288.) |
| Aug 27, 2025 | Ordered to special consent calendar. |
| Aug 20, 2025 | From committee: Ordered to third reading. |
| Jul 15, 2025 | In Senate. To Com. on RLS. |
| Jul 14, 2025 | Adopted and to Senate. (Page 2533.) |
| Jul 14, 2025 | Coauthors revised. |
| Jul 7, 2025 | From committee: Be adopted. Ordered to Third Reading. (Ayes 8. Noes 0.) (July 7). |
| Jun 30, 2025 | Referred to Com. on RLS. |
| Jun 26, 2025 | From printer. |
| Jun 25, 2025 | Introduced. To print. |
|
Date
|
Description
|
Location
|
Votes
|
|
|---|---|---|---|---|
| Aug 29, 2025 | Special Consent ACR103 Addis et al. | Senate Floor |
Passed |
|
| Jul 7, 2025 | Be adopted. To third reading. | Assembly Standing Committee on Rules |
Passed |
This list shows positions taken on this bill by organizations on the date displayed, which is linked to the original source.
Positions by individuals are not included.
SENATE RULES COMMITTEE Office of Senate Floor Analyses (916) 651-1520 Fax: (916) 327-4478 | ACR 103 |
THIRD READING
Bill No: ACR 103
Author: Addis (D), et al.
Introduced: 6/25/25
Vote: 21
SUBJECT: California Western Monarch Protection Week
SOURCE: Author
DIGEST:
This resolution proclaims the week of July 14, 2025, to July 18, 2025, inclusive, to be California Western Monarch Protection Week
ANALYSIS: This resolution makes the following legislative findings:
- In late November, western monarchs migrate to the California coast and spend the winter clustering in groves of pine, cypress, and eucalyptus trees.
- Over the past quarter century, the number of monarchs recorded during the peak of the migration season has fallen a staggering 81 percent, from 1,235,490 monarchs to just 233,394 monarchs last year.
- The United States Fish and Wildlife Service, as of 2024, is proposing protections for the monarch butterfly and encouraging public involvement in its recovery, including the designation of over 4,300 acres in California as critical habitat.
- California has sought to protect and preserve over 400 western monarch butterfly overwintering sites across the state, including Pacific Grove Monarch Sanctuary, Natural Bridges State Beach, Goleta Monarch Butterfly Grove, and Point Mugu State Park.
- Recognition of California Western Monarch Protection Week will have a positive impact by raising public awareness, promoting conservation efforts, and inspiring community action to protect monarch butterflies and their habitats.
This resolution proclaims the week of July 14, 2025, to July 18, 2025, inclusive, to be California Western Monarch Protection Week
FISCAL EFFECT: Appropriation: No Fiscal Com.: No Local: No
SUPPORT: (Verified 8/19/25)
None received
OPPOSITION: (Verified 8/19/25)
None received
Prepared by: Sofia Pachon-Mendez / SFA / (916) 651-1520
8/20/25 23:35:48
**** END ****
ASSEMBLY THIRD READING
ATR Bill Id:ACR 103
Author:(Addis)
As Introduced Ver:June 25, 2025
Majority vote
SUMMARY
Proclaims the week of July 14, 2025, to July 18, 2025, inclusive, to be California Western Monarch Protection Week.
Major Provisions
- The western monarch butterfly is known for its astonishing long-distance annual migration to overwintering habitats along the central coast of California.
- In late November, western monarchs migrate to the California coast and spend the winter clustering in groves of pine, cypress, and eucalyptus trees.
- As temperatures warm and daylight hours increase in February, western monarchs mate and migrate inland to lay eggs on emerging milkweeds.
- Over the past quarter century, the number of monarchs recorded during the peak of the migration season has fallen a staggering 81%, from 1,235,490 monarchs to just 233,394 monarchs last year.
- Monarch populations are declining due to the loss and degradation of breeding, migratory, and overwintering habitat, climate change, and the use of certain herbicides and insecticides that harm milkweed.
- The United States Fish and Wildlife Service, as of 2024, is proposing protections for the monarch butterfly and encouraging public involvement in its recovery, including the designation of over 4,300 acres in California as critical habitat.
- Recognition of California Western Monarch Protection Week will have a positive impact by raising public awareness, promoting conservation efforts, and inspiring community action to protect monarch butterflies and their habitats.
COMMENTS
According to the Author
This resolution is necessary to raise awareness about the alarming decline of the Western Monarch Butterfly population, and to promote conservation efforts across California. The monarch's remarkable migration to the Central Coast is not only an ecological treasure but also a vital contributor to local tourism and environmental health.
Arguments in Support
None on file
Arguments in Opposition
None on file
FISCAL COMMENTS
No fiscal impact. This resolution is keyed non-fiscal by Legislative Counsel.
VOTES
ASM RULES: 8-0-3
YES: Pacheco, Lackey, Ahrens, Irwin, Krell, Patel, Michelle Rodriguez, Sanchez
ABS, ABST OR NV: Flora, Mark González, Zbur
UPDATED
VERSION: June 25, 2025
CONSULTANT: Michael Erke / RLS. / (916) 319-2800 FN: 0001088
Bill Author
Bill Co-Author(s):
