# Colorado HB25-1283: Wild Horse Project Management & Immunocontraception Colorado HB25-1283, Wild Horse Project Management & Immunocontraception, is a 2025 Regular Session House bill sponsored by Janice Marchman (Democratic), Larry Liston (Republican), Monica Duran (Democratic) and 1 others; status signed, last action 2025-05-22 (Governor Signed) (as of 2026-10-16). - Canonical: https://policyrisk.com/state-bill/CO-HB25-1283-2025A - As of: 2026-10-16 - Plain-text twin of the page above; the HTML and this file carry the same facts. ## Facts - Bill: Colorado HB25-1283 - State: Colorado - Session: 2025 Regular Session - Title: Wild Horse Project Management & Immunocontraception - Status: signed - Chamber: House - Introduced: 2025-02-24 - Last action: 2025-05-22, Governor Signed - Sponsors: Janice Marchman (Democratic), Larry Liston (Republican), Monica Duran (Democratic), Ty Winter (Republican) - Cosponsors: 21 - Subjects: Natural Resources & Environment - Touches household money: no - Roll calls: 7 (260 yes, 20 no in all) - Economic provisions PRIA read: 4 ## Summary No summary available. ## Bill overview: provisions PRIA read - Colorado shifts wild horse birth control: benefit, low. The law replaces the Wild Horse Project, stewardship program, and fertility program with Department of Agriculture management. The department can use immunocontraception, a form of birth control, to keep herds at designated population targets. It can provide workers, contracts, funding, events, equ… - More support options for wild horse adopters: benefit, low. The Department of Agriculture can provide staff, resources, and information to support wild horse adoption and training. It can develop shared equipment and staff expertise loan programs for private adopters, sanctuaries, preserves, and refuges. It can also develop training and certifications for t… - New funding sources for wild horse work: benefit, low. The law creates a Wild Horse Fund for donations, gifts, grants, federal payments, and money lawmakers appropriate or transfer. The Department of Agriculture can seek and accept gifts, grants, and donations; the State Treasurer deposits them in the fund. When reasonable and effective, the department… - Wild horse oversight adds yearly reports: benefit, low. Beginning July 1, 2026, the law creates a Wild Horse Advisory Committee with at least 14 members serving four-year terms. The commissioner must make initial appointments by that date, and the committee must meet at least yearly. It advises on adopter support, training, horse transfers, adoption, fo… ## Sponsors and cosponsors - Sponsor: Janice Marchman (Democratic), Senate - Sponsor: Larry Liston (Republican), Senate - Sponsor: Monica Duran (Democratic), House - Sponsor: Ty Winter (Republican), House - Cosponsor: Bob Marshall (Democratic), House - Cosponsor: Chad Clifford (Democratic), House - Cosponsor: Eliza Hamrick (Democratic), House - Cosponsor: Emily Sirota (Democratic), House - Cosponsor: Jennifer Bacon (Democratic), House - Cosponsor: Julie McCluskie (Democratic), House - Cosponsor: Jacque Phillips (Democratic), House - Cosponsor: Jenny Willford (Democratic), House - Cosponsor: Kyle Brown (Democratic), House - Cosponsor: Karen McCormick (Democratic), House - Cosponsor: Katie Stewart (Democratic), House - Cosponsor: Lesley Smith (Democratic), House - Cosponsor: Mandy Lindsay (Democratic), House - Cosponsor: Meghan Lukens (Democratic), House - Cosponsor: Matt Soper (Republican), House - Cosponsor: Naquetta Ricks (Democratic), House - Cosponsor: Rep. S. Bird - Cosponsor: Sheila Lieder (Democratic), House - Cosponsor: Tisha Mauro (Democratic), House - Cosponsor: Dafna Michaelson Jenet (Democratic), Senate - Cosponsor: Iman Jodeh (Democratic), Senate ## Roll call votes | Date | Chamber | Motion | Result | Yes | No | Other | | --- | --- | --- | --- | --- | --- | --- | | 2025-04-23 | House | Senate amendments: Concur | pass | 64 | 0 | | | 2025-04-23 | House | Senate amendments: Repass | pass | 60 | 4 | | | 2025-04-21 | Senate | Third reading: Bill | pass | 29 | 6 | | | 2025-04-14 | Senate | Committee of the whole: Adopt report | pass | 33 | 0 | | | 2025-04-10 | Senate | Refer House Bill 25-1283, as amended, to the Committee of the Whole. | pass | 5 | 2 | | | 2025-03-19 | House | Third reading: Bill | pass | 56 | 8 | | | 2025-03-13 | House | Refer House Bill 25-1283, as amended, to the Committee of the Whole. | pass | 13 | 0 | | ## Actions (16) - 2025-05-22: Governor Signed (House) - 2025-05-12: Signed by the Speaker of the House (House) - 2025-05-12: Signed by the President of the Senate (Senate) - 2025-05-12: Sent to the Governor (House) - 2025-04-23: House Considered Senate Amendments - Result was to Concur - Repass (House) - 2025-04-22: House Considered Senate Amendments - Result was to Laid Over Daily (House) - 2025-04-21: Senate Third Reading Passed - No Amendments (Senate) - 2025-04-17: Senate Second Reading Passed with Amendments - Committee (Senate) - 2025-04-14: Senate Second Reading Laid Over Daily - No Amendments (Senate) - 2025-04-10: Senate Committee on Agriculture & Natural Resources Refer Amended to Senate Committee of the Whole (Senate) - 2025-03-24: Introduced In Senate - Assigned to Agriculture & Natural Resources (Senate) - 2025-03-19: House Third Reading Passed - No Amendments (House) - 2025-03-18: House Third Reading Laid Over Daily - No Amendments (House) - 2025-03-17: House Second Reading Special Order - Passed with Amendments - Committee (House) - 2025-03-13: House Committee on Agriculture, Water & Natural Resources Refer Amended to House Committee of the Whole (House) - 2025-02-24: Introduced In House - Assigned to Agriculture, Water & Natural Resources (House) ## Bill text - Engrossed: [PDF](https://leg.colorado.gov/bill_files/82443/download) - Final Act: [PDF](https://leg.colorado.gov/bill_files/82371/download) - Introduced: [PDF](https://leg.colorado.gov/bill_files/82458/download) - Reengrossed: [PDF](https://leg.colorado.gov/bill_files/82424/download) - Rerevised: [PDF](https://leg.colorado.gov/bill_files/82389/download) - Revised: [PDF](https://leg.colorado.gov/bill_files/82406/download) - Signed Act: [PDF](https://leg.colorado.gov/bill_files/40623/download) ## Related bills - SB25-279: Colorado Code of Military Justice Updates (signed) - HB25-1234: Utility Consumer Protection (signed) - HB25-1307: Updating Technical References in Education Law (signed) - SB25-163: Battery Stewardship Programs (signed) - SB25-261: Property Tax Deferral Program Administration (signed) - SB25-167: Invest State Funds to Benefit Communities (signed) ## Sources - [Engrossed (PDF)](https://leg.colorado.gov/bill_files/82443/download) - [Final Act (PDF)](https://leg.colorado.gov/bill_files/82371/download) - [Introduced (PDF)](https://leg.colorado.gov/bill_files/82458/download) - [Reengrossed (PDF)](https://leg.colorado.gov/bill_files/82424/download) - [Rerevised (PDF)](https://leg.colorado.gov/bill_files/82389/download) - [Revised (PDF)](https://leg.colorado.gov/bill_files/82406/download) - [Signed Act (PDF)](https://leg.colorado.gov/bill_files/40623/download) ## Related - [SB25-279: Colorado Code of Military Justice Updates](https://policyrisk.com/state-bill/CO-SB25-279-2025A) - [HB25-1234: Utility Consumer Protection](https://policyrisk.com/state-bill/CO-HB25-1234-2025A) - [HB25-1307: Updating Technical References in Education Law](https://policyrisk.com/state-bill/CO-HB25-1307-2025A) - [SB25-163: Battery Stewardship Programs](https://policyrisk.com/state-bill/CO-SB25-163-2025A) - [SB25-261: Property Tax Deferral Program Administration](https://policyrisk.com/state-bill/CO-SB25-261-2025A) - [SB25-167: Invest State Funds to Benefit Communities](https://policyrisk.com/state-bill/CO-SB25-167-2025A) - [Colorado bills](https://policyrisk.com/states/colorado/bills) - [Colorado state hub](https://policyrisk.com/states/colorado) - [All state legislation](https://policyrisk.com/state-bills) Source: PRIA, https://policyrisk.com/state-bill/CO-HB25-1283-2025A (as of 2026-10-16).