republic-os/legislation/us/states/co/2025a/sb-25-053.md

type, title, description, jurisdiction, legislature, session, identifier, citation, classification, subjects, status, primary_sponsors, version_count, action_count, vote_count, first_action, last_action, source, source_identifier, source_url, source_hash, vintage, source_snapshot, retrieved_at, confidence, tags

type	title	description	jurisdiction	legislature	session	identifier	citation	classification	subjects	status	primary_sponsors	version_count	action_count	vote_count	first_action	last_action	source	source_identifier	source_url	source_hash	vintage	source_snapshot	retrieved_at	confidence	tags
Bill	Protect Wild Bison	The act classifies bison as big game unless the bison are livestock. Classifying bison as wildlife means that hunting or taking one is illegal unless authorized by rule of the parks and wildlife commission. The act also clarifies that "wildlife" does not include privately owned cattle, including bison legally reduced to captivity or bison that have escaped lawful captivity, or bison owned by or lawfully reduced to captivity by an Indian tribe.	us/states/co	Colorado General Assembly	2025A	SB 25-053	Colorado SB 25-053 (2025A)	bill		enacted	Elizabeth Velasco Jessie Danielson Junie Joseph	10	15	2	2025-01-15T07:00:00+00:00	2025-05-22T06:00:00+00:00	openstates	ocd-bill/3e449060-683e-4d71-aa19-81392500f712	https://leg.colorado.gov/bills/sb25-053	16541bc4ba712fba2b6f38040bf38a1503b6573689f9476c22a418299e0966d9	2026-07-01	https://data.openstates.org/daily/2026-07-01/public.pgdump	2026-07-06	reported	legislation bill us-co

Colorado SB 25-053 (2025A) — Protect Wild Bison

The act classifies bison as big game unless the bison are livestock. Classifying bison as wildlife means that hunting or taking one is illegal unless authorized by rule of the parks and wildlife commission. The act also clarifies that "wildlife" does not include privately owned cattle, including bison legally reduced to captivity or bison that have escaped lawful captivity, or bison owned by or lawfully reduced to captivity by an Indian tribe.

Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. Committee Amendment (committee substitute) — source
2. Engrossed (04/15/2025) (committee substitute) — source
3. Final Act (05/06/2025) (committee substitute) — source
4. Introduced (01/15/2025) (committee substitute) — source
5. PA1 (03/21/2025) (committee substitute) — source
6. PA2 (04/11/2025) (committee substitute) — source
7. Reengrossed (04/17/2025) (committee substitute) — source
8. Rerevised (04/28/2025) (committee substitute) — source
9. Revised (04/25/2025) (committee substitute) — source
10. Signed Act (05/22/2025) (committee substitute) — source

Votes

• BILL — 40–24 (pass) · lower
• BILL — 24–11 (pass) · upper

Sponsors

• Elizabeth Velasco — primary (person)
• Jessie Danielson — primary (person)
• Junie Joseph — primary (person)
• A. Valdez — cosponsor (person)
• C. Kipp — cosponsor (person)
• C. Kolker — cosponsor (person)
• D. Michaelson Jenet — cosponsor (person)
• F. Winter — cosponsor (person)
• I. Jodeh — cosponsor (person)
• J. Amabile — cosponsor (person)
• J. Bridges — cosponsor (person)
• J. Coleman — cosponsor (person)
• J. Gonzales — cosponsor (person)
• J. Jackson — cosponsor (person)
• J. Marchman — cosponsor (person)
• K. Brown — cosponsor (person)
• K. Wallace — cosponsor (person)
• L. Cutter — cosponsor (person)
• M. Ball — cosponsor (person)
• M. Duran — cosponsor (person)
• M. Lindsay — cosponsor (person)
• M. Rutinel — cosponsor (person)
• M. Weissman — cosponsor (person)
• T. Exum — cosponsor (person)
• T. Sullivan — cosponsor (person)

Timeline

The legislative action history — every referral, reading, and vote.

• 2025-05-22T06:00:00+00:00 Governor Signed executive-signature
• 2025-05-06T06:00:00+00:00 Signed by the Speaker of the House
• 2025-05-06T06:00:00+00:00 Sent to the Governor executive-receipt
• 2025-05-06T06:00:00+00:00 Signed by the President of the Senate
• 2025-04-28T06:00:00+00:00 House Third Reading Passed - No Amendments passage, reading-3
• 2025-04-25T06:00:00+00:00 House Second Reading Special Order - Passed - No Amendments
• 2025-04-25T06:00:00+00:00 House Committee on Appropriations Refer Unamended to House Committee of the Whole committee-passage, referral-committee
• 2025-04-21T06:00:00+00:00 House Committee on Agriculture, Water & Natural Resources Refer Unamended to Appropriations referral-committee
• 2025-04-17T06:00:00+00:00 Introduced In House - Assigned to Agriculture, Water & Natural Resources introduction
• 2025-04-17T06:00:00+00:00 Senate Third Reading Passed - No Amendments passage, reading-3
• 2025-04-16T06:00:00+00:00 Senate Third Reading Laid Over Daily - No Amendments
• 2025-04-15T06:00:00+00:00 Senate Second Reading Passed with Amendments - Committee, Floor reading-2
• 2025-04-11T06:00:00+00:00 Senate Committee on Appropriations Refer Amended to Senate Committee of the Whole committee-passage, referral-committee
• 2025-03-20T06:00:00+00:00 Senate Committee on Agriculture & Natural Resources Refer Amended to Appropriations referral-committee
• 2025-01-15T07:00:00+00:00 Introduced In Senate - Assigned to Agriculture & Natural Resources introduction

Source

OpenStates / OpenCivicData bulk snapshot 2026-07-01; origin ocd-bill/3e449060-683e-4d71-aa19-81392500f712. Confidence: reported (aggregated from official Colorado legislature records).