Which federal agency does Defenders of Wildlife comment on most?

Defenders of Wildlife is most active at the Fish and Wildlife Service.

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Defenders of Wildlife

Unclaimed

Industry

Nonprofit management

Staff

170

1130 17th St NW, Washington, DC 20036

Phone

+1 202-682-9400

Website

defenders.org

Engagement overview

Defenders of Wildlife has filed 280 public comments across 190 dockets at 17 federal agencies, most actively at the Fish and Wildlife Service.

280

Comments filed

190

Dockets engaged

Agencies

Jun 25, 2026

Last filing

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Agency footprint

All agencies FWS64 EPA42 NOAA28 BOEM26 APHIS5 CEQ4 AMS3 USCG3 DOI2 FAA2 FEMA2 FHWA2 NPS2 USDA2 COE1 MMS1 USC1

Dockets · FWS (64)

sorted by most recent filing

FWSRulemakingFWS-HQ-NWRS-2026-1223

National Wildlife Refuge System; 2026–2027 Station-Specific Hunting and Sport Fishing Regulations

1 of your filingslast filed Jun 25, 20261 co-filersRIN 1018-BI71

FWSNonrulemakingFWS-R6-ES-2026-0958

Endangered and Threatened Wildlife and Plants; Request for Information on Implementation of the Gray Wolf (Canis lupus) Nonessential Experimental Population Rule in Colorado

2 of your filingslast filed Jun 5, 20262 co-filers

FWSRulemakingFWS-HQ-ES-2025-0029

Endangered and Threatened Wildlife and Plants; Regulations Pertaining to Endangered and Threatened Wildlife and Plants

4 of your filingslast filed Dec 22, 2025137 co-filers

FWSRulemakingFWS-HQ-ES-2025-0039

Endangered and Threatened Wildlife and Plants; Listing Endangered and Threatened Species and Designating Critical Habitat

3 of your filingslast filed Dec 22, 2025139 co-filers

FWSRulemakingFWS-HQ-ES-2025-0044

Endangered and Threatened Wildlife and Plants; Interagency Cooperation Regulations

3 of your filingslast filed Dec 22, 2025123 co-filers

FWSRulemakingFWS-HQ-ES-2025-0048

Endangered and Threatened Wildlife and Plants; Regulations for Designating Critical Habitat

3 of your filingslast filed Dec 22, 2025122 co-filers

FWSRulemakingFWS-HQ-ES-2025-0176

Endangered and Threatened Wildlife and Plants; Regulations for Eleven Species Treated as Listed Due to Similarity of Appearance

2 of your filingslast filed Nov 18, 202510 co-filers

FWSNonrulemakingFWS-HQ-ES-2025-0049

Development of Conservation Benefit Agreements and Habitat Conservation Plans, and Issuance of associated Enhancement of Survival and Incidental Take Permits

1 of your filingslast filed Jul 10, 202532 co-filers

FWSRulemakingFWS-HQ-ES-2025-0034

Endangered and Threatened Wildlife and Plants; Rescinding the Definition of “Harm” Under the Endangered Species Act

4 of your filingslast filed May 21, 2025299 co-filers

FWSRulemakingFWS-R6-ES-2024-0186

Endangered and Threatened Wildlife and Plants; Revising the List of Endangered and Threatened Wildlife Regarding the Grizzly Bear in the Lower-48 States

1 of your filingslast filed May 16, 202541 co-filers

FWSNonrulemakingFWS-R7-ES-2024-0128

Marine Mammal Protection Act; Draft Revised Stock Assessment Reports for Two Stocks of Polar Bears in Alaska

1 of your filingslast filed Apr 3, 20252 co-filers

FWSRulemakingFWS-R4-ES-2024-0050

Endangered and Threatened Wildlife and Plants; Threatened Status for the Florida Manatee and Endangered Status for the Antillean Manatee

1 of your filingslast filed Mar 18, 20253 co-filers

FWSRulemakingFWS-R3-ES-2024-0137

Threatened Species Status with Section 4(d) Rule for Monarch Butterfly and Designation of Critical Habitat

1 of your filingslast filed Mar 13, 2025115 co-filers

FWSNonrulemakingFWS-R7-NWRS-2023-0072

Notice of Availability; Draft Supplemental Environmental Impact Statement for a Potential Land Exchange Involving Izembek National Wildlife Refuge Lands

4 of your filingslast filed Feb 26, 202515 co-filers

FWSRulemakingFWS-R6-ES-2024-0142

Endangered and Threatened Wildlife and Plants; Revised Designation of Critical Habitat for the Contiguous U.S. Distinct Population Segment of the Canada Lynx

6 of your filingslast filed Jan 27, 20258 co-filers

FWSNonrulemakingFWS-R8-ES-2024-0125

Endangered and Threatened Species; Receipt of Amended Incidental Take Permit Application and Amended Habitat Conservation Plan for the Proposed Rooney Ranch Wind Repowering Project, Alameda County, CA; Draft Environmental Assessment

1 of your filingslast filed Jan 13, 20250 co-filers

FWSRulemakingFWS-R4-ES-2024-0073

Endangered and Threatened Wildlife and Plants; Revised Critical Habitat Designation for Florida Manatee and Proposed Critical Habitat Designation for Antillean Manatee

1 of your filingslast filed Oct 22, 20248 co-filers

FWSNonrulemakingFWS-R8-ES-2023-0084

Notice of Intent to Prepare a Draft Environmental Impact Statement for the Desert Tortoise General Conservation Plan, California

1 of your filingslast filed Oct 11, 20246 co-filers

FWSRulemakingFWS-HQ-NWRS-2022-0106

National Wildlife Refuge System; Biological Integrity, Diversity, and Environmental Health

1 of your filingslast filed May 3, 202460 co-filers

FWSNonrulemakingFWS-R6-ES-2023-0203

Endangered and Threatened Wildlife and Plants; Establishment of an Experimental Population of the Grizzly Bear in the Bitterroot Ecosystem of the States of Idaho and Montana; Environmental Impact Statement

1 of your filingslast filed Mar 18, 202420 co-filers

FWSRulemakingFWS-R6-ES-2023-0216

Endangered and Threatened Wildlife and Plants; Threatened Species Status with Section 4(d) Rule for North American Wolverine

1 of your filingslast filed Jan 30, 202423 co-filers

FWSNonrulemakingFWS-R7-ES-2023-0209

Marine Mammals; Incidental Take During Specified Activities; Proposed Incidental Harassment Authorization for the Southern Beaufort Sea Stock of Polar Bears on the North Slope of Alaska

1 of your filingslast filed Jan 26, 20241 co-filers

FWSRulemakingFWS-R6-ES-2022-0150

Endangered and Threatened Wildlife and Plants; 90-Day Findings for Three Petitions To Delist the Grizzly Bear in the Lower-48 States

1 of your filingslast filed Dec 19, 202315 co-filers

FWSRulemakingFWS-R1-ES-2023-0074

Endangered and Threatened Wildlife and Plants; Proposed Establishment of a Nonessential Experimental Population of Grizzly Bear in the North Cascades Ecosystem, Washington State

1 of your filingslast filed Nov 14, 202316 co-filers

FWSRulemakingFWS-HQ-NWRS-2023-0024

Updated National Wildlife Refuge System Planning Policies (602 FW 1 - 4)

1 of your filingslast filed Oct 24, 20238 co-filers

FWSRulemakingFWS-R4-ES-2022-0164

Designation of Critical Habitat for Green Sea Turtle (Chelonia mydas)

1 of your filingslast filed Oct 18, 20237 co-filers

FWSRulemakingFWS-R2-ES-2022-0162

Endangered and Threatened Wildlife and Plants; Endangered Species Status for the Dunes Sagebrush Lizard

1 of your filingslast filed Sep 26, 202317 co-filers

FWSNonrulemakingFWS-R6-NWRS-2023-0062

Intent to Prepare a Bison and Elk Management Plan for the National Elk Refuge and Grand Teton National Park in Wyoming; Environmental Impact Statement

1 of your filingslast filed Aug 31, 20233 co-filers

FWSRulemakingFWS-HQ-ES-2021-0104

Endangered and Threatened Wildlife and Plants; Revision of Regulations for Interagency Cooperation

3 of your filingslast filed Aug 22, 202355 co-filers

FWSRulemakingFWS-HQ-ES-2023-0018

Endangered and Threatened Wildlife and Plants; Regulations Pertaining to Endangered and Threatened Wildlife and Plants

4 of your filingslast filed Aug 22, 202349 co-filers

FWSRulemakingFWS-HQ-ES-2021-0107

Endangered and Threatened Wildlife and Plants; Listing Endangered and Threatened Species and Designating Critical Habitat

3 of your filingslast filed Aug 22, 202351 co-filers

FWSRulemakingFWS-R5-ES-2021-0032

Endangered and Threatened Wildlife and Plants; Designation of Critical Habitat for Rufa Red Knot

2 of your filingslast filed May 31, 202310 co-filers

FWSRulemakingFWS-R6-ES-2022-0100

Endangered and Threatened Wildlife and Plants; Establishment of a Nonessential Experimental Population of the Gray Wolf in the State of Colorado

4 of your filingslast filed Apr 18, 202330 co-filers

FWSRulemakingFWS-HQ-ES-2021-0152

Endangered and Threatened Wildlife and Plants; Revision of the Regulations Regarding Section 10(a)(1)(A) Enhancement of Survival and Section 10(a)(1)(B) Incidental take permits

1 of your filingslast filed Apr 11, 202325 co-filers

FWSRulemakingFWS-HQ-MB-2020-0023

Eagle Permits; Incidental Take

2 of your filingslast filed Dec 29, 202232 co-filers

FWSRulemakingFWS-R8-ES-2022-0013

Endangered and Threatened Wildlife and Plants; 90-Day Findings for Six Species; Southern sea otter

3 of your filingslast filed Dec 29, 20222 co-filers

FWSRulemakingFWS-R8-ES-2021-0060

Endangered and Threatened Wildlife and Plants; Designation of Critical Habitat for the Southern Sierra Nevada Distinct Population Segment of Fisher (Pekania pennanti)

1 of your filingslast filed Dec 23, 20228 co-filers

FWSRulemakingFWS-HQ-ES-2021-0137

Endangered and Threatened Wildlife and Plants; Compensatory Mitigation Mechanisms Under the Endangered Species Act

1 of your filingslast filed Sep 27, 202217 co-filers

FWSNonrulemakingFWS-HQ-IA-2021-0008

Conference of the Parties to the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES); Nineteenth Regular Meeting: Species Proposals for Consideration and Request for Information and Recommendations on Resolutions, Decisions, and Agenda Items for Consideration

1 of your filingslast filed Sep 21, 202229 co-filers

FWSRulemakingFWS-HQ-ES-2021-0033

Endangered and Threatened Wildlife and Plants; Designation of Experimental Populations

1 of your filingslast filed Aug 9, 202244 co-filers

FWSNonrulemakingFWS-R8-ES-2022-0034

Endangered and Threatened Species; Receipt of an Incidental Take Permit Application for the Desert Tortoise; Availability of Draft Habitat Conservation Plan and Draft Environmental Assessment; Bellefield Solar Energy Project, Kern County, California

1 of your filingslast filed May 26, 20221 co-filers

FWSNonrulemakingFWS-R2-ES-2022-0018

Endangered and Threatened Wildlife and Plants; Draft Recovery Plan, Second Revision, for the Mexican Wolf

3 of your filingslast filed May 18, 202211 co-filers

FWSRulemakingFWS-HQ-ES-2021-0106

Endangered and Threatened Wildlife and Plants; 90-Day Finding for Two Petitions to List the Gray Wolf in the Western United States

1 of your filingslast filed Apr 7, 202242 co-filers

FWSNonrulemakingFWS-R2-ES-2021-0136

Endangered and Threatened Wildlife and Plants; Draft Recovery Plan for the New Mexico Meadow Jumping Mouse

1 of your filingslast filed Mar 8, 20225 co-filers

FWSRulemakingFWS-R2-ES-2021-0098

Endangered and Threatened Wildlife and Plants; Listing Determination and Critical Habitat Designation for the Cactus Ferruginous Pygmy-Owl

1 of your filingslast filed Feb 22, 20225 co-filers

FWSRulemakingFWS-R2-ES-2021-0103

Endangered and Threatened Wildlife and Plants; Revision to the Nonessential Experimental Population of the Mexican Wolf

2 of your filingslast filed Jan 28, 202213 co-filers

FWSRulemakingFWS-R4-ES-2021-0115

Endangered and Threatened Wildlife and Plants; Threatened Species Status with Section 4(d) Rule for Alligator Snapping Turtle

1 of your filingslast filed Dec 17, 20219 co-filers

FWSRulemakingFWS-HQ-MB-2021-0105

Migratory Bird Permits; Authorizing the Incidental Take of Migratory Birds

1 of your filingslast filed Dec 6, 202149 co-filers

FWSRulemakingFWS-R2-ES-2020-0042

Endangered and Threatened Wildlife and Plants; Endangered Species Status for the Peñasco Least Chipmunk and Designation of Critical Habitat

1 of your filingslast filed Nov 29, 20212 co-filers

FWSRulemakingFWS-R2-ES-2021-0015

Endangered and Threatened Wildlife and Plants; Threatened Species Status with Section 4(d) Rule for the Northern Distinct Population Segment and Endangered Status for the Southern Distinct Population Segment of the Lesser Prairie-Chicken

1 of your filingslast filed Sep 1, 202154 co-filers

FWSNonrulemakingFWS-R5-ES-2020-0098

Endangered and Threatened Wildlife and Plants; Draft Recovery Plan for the Rufa Red Knot

1 of your filingslast filed Jul 13, 20215 co-filers

FWSNonrulemakingFWS-R7-ES-2020-0129

Marine Mammals; Incidental Take During Specified Activities; Proposed Incidental Harassment Authorization for Polar Bears in the Arctic National Wildlife Refuge, Alaska; Availability of Draft Environmental Assessment; Request for Comments

1 of your filingslast filed Jan 8, 20215 co-filers

FWSRulemakingFWS-HQ-ES-2019-0115

Endangered and Threatened Wildlife and Plants; Revision of the Regulations for Designating Critical Habitat

1 of your filingslast filed Oct 8, 202041 co-filers

FWSRulemakingFWS-HQ-ES-2020-0047

Endangered and Threatened Wildlife and Plants; Regulations for Listing Endangered and Threatened Species and Designating Critical Habitat

2 of your filingslast filed Sep 4, 202052 co-filers

FWSRulemakingFWS-R7-NWRS-2017-0058

Refuge-Specific Regulation; Public Use; Kenai National Wildlife Refuge

1 of your filingslast filed Aug 10, 20202 co-filers

FWSRulemakingFWS-R2-ES-2020-0007

Endangered and Threatened Wildlife and Plants; Revision to the Nonessential Experimental Population of the Mexican Wolf (Canis lupus baileyi)

1 of your filingslast filed Jun 15, 20202 co-filers

FWSRulemakingFWS-R2-ES-2013-0056

Proposed Revision to the Nonessential Experimental Population of the Mexican Wolf

1 of your filingslast filed Dec 29, 20146 co-filers

FWSRulemakingFWS-HQ-NWRS-2012-0086

Non-Federal Oil and Gas Development Within the National Wildlife Refuge System

1 of your filingslast filed Jul 14, 20141 co-filers

FWSRulemakingFWS-HQ-ES-2013-0073

Removing the Gray Wolf from the List of Endangered and Threatened Wildlife and Maintaining Protections for the Mexican Wolf by Listing It as Endangered

7 of your filingslast filed Apr 4, 201410 co-filers

FWSRulemakingFWS-R6-ES-2011-0111

Designation of Critical Habitat for Gunnison Sage-grouse

1 of your filingslast filed Feb 6, 20142 co-filers

FWSRulemakingFWS-R2-ES-2013-0098

Notice of Intent to Prepare an Environmental Impact Statement for the Proposed Revision to the Nonessential Experimental Population of the Mexican Wolf and the Implementation of a Management Plan

1 of your filingslast filed Oct 18, 20130 co-filers

FWSRulemakingFWS-R9-ES-2011-0031

Attribution is name-based and imperfect. Firmographic data is third-party sourced and shown for demonstration. regulations.gov data is public record.

Defenders of Wildlife

Engagement overview

Is this your organization?

Agency footprint

Dockets · FWS (64)

National Wildlife Refuge System; 2026–2027 Station-Specific Hunting and Sport Fishing Regulations

Endangered and Threatened Wildlife and Plants; Request for Information on Implementation of the Gray Wolf (Canis lupus) Nonessential Experimental Population Rule in Colorado

Endangered and Threatened Wildlife and Plants; Regulations Pertaining to Endangered and Threatened Wildlife and Plants

Endangered and Threatened Wildlife and Plants; Listing Endangered and Threatened Species and Designating Critical Habitat

Endangered and Threatened Wildlife and Plants; Interagency Cooperation Regulations

Endangered and Threatened Wildlife and Plants; Regulations for Designating Critical Habitat

Endangered and Threatened Wildlife and Plants; Regulations for Eleven Species Treated as Listed Due to Similarity of Appearance

Development of Conservation Benefit Agreements and Habitat Conservation Plans, and Issuance of associated Enhancement of Survival and Incidental Take Permits

Endangered and Threatened Wildlife and Plants; Rescinding the Definition of “Harm” Under the Endangered Species Act

Endangered and Threatened Wildlife and Plants; Revising the List of Endangered and Threatened Wildlife Regarding the Grizzly Bear in the Lower-48 States

Marine Mammal Protection Act; Draft Revised Stock Assessment Reports for Two Stocks of Polar Bears in Alaska

Endangered and Threatened Wildlife and Plants; Threatened Status for the Florida Manatee and Endangered Status for the Antillean Manatee

Threatened Species Status with Section 4(d) Rule for Monarch Butterfly and Designation of Critical Habitat

Notice of Availability; Draft Supplemental Environmental Impact Statement for a Potential Land Exchange Involving Izembek National Wildlife Refuge Lands

Endangered and Threatened Wildlife and Plants; Revised Designation of Critical Habitat for the Contiguous U.S. Distinct Population Segment of the Canada Lynx

Endangered and Threatened Species; Receipt of Amended Incidental Take Permit Application and Amended Habitat Conservation Plan for the Proposed Rooney Ranch Wind Repowering Project, Alameda County, CA; Draft Environmental Assessment

Endangered and Threatened Wildlife and Plants; Revised Critical Habitat Designation for Florida Manatee and Proposed Critical Habitat Designation for Antillean Manatee

Notice of Intent to Prepare a Draft Environmental Impact Statement for the Desert Tortoise General Conservation Plan, California

National Wildlife Refuge System; Biological Integrity, Diversity, and Environmental Health

Endangered and Threatened Wildlife and Plants; Establishment of an Experimental Population of the Grizzly Bear in the Bitterroot Ecosystem of the States of Idaho and Montana; Environmental Impact Statement

Endangered and Threatened Wildlife and Plants; Threatened Species Status with Section 4(d) Rule for North American Wolverine

Marine Mammals; Incidental Take During Specified Activities; Proposed Incidental Harassment Authorization for the Southern Beaufort Sea Stock of Polar Bears on the North Slope of Alaska

Endangered and Threatened Wildlife and Plants; 90-Day Findings for Three Petitions To Delist the Grizzly Bear in the Lower-48 States

Endangered and Threatened Wildlife and Plants; Proposed Establishment of a Nonessential Experimental Population of Grizzly Bear in the North Cascades Ecosystem, Washington State

Updated National Wildlife Refuge System Planning Policies (602 FW 1 - 4)

Designation of Critical Habitat for Green Sea Turtle (Chelonia mydas)

Endangered and Threatened Wildlife and Plants; Endangered Species Status for the Dunes Sagebrush Lizard

Intent to Prepare a Bison and Elk Management Plan for the National Elk Refuge and Grand Teton National Park in Wyoming; Environmental Impact Statement

Endangered and Threatened Wildlife and Plants; Revision of Regulations for Interagency Cooperation

Endangered and Threatened Wildlife and Plants; Regulations Pertaining to Endangered and Threatened Wildlife and Plants

Endangered and Threatened Wildlife and Plants; Listing Endangered and Threatened Species and Designating Critical Habitat

Endangered and Threatened Wildlife and Plants; Designation of Critical Habitat for Rufa Red Knot

Endangered and Threatened Wildlife and Plants; Establishment of a Nonessential Experimental Population of the Gray Wolf in the State of Colorado

Endangered and Threatened Wildlife and Plants; Revision of the Regulations Regarding Section 10(a)(1)(A) Enhancement of Survival and Section 10(a)(1)(B) Incidental take permits

Eagle Permits; Incidental Take

Endangered and Threatened Wildlife and Plants; 90-Day Findings for Six Species; Southern sea otter

Endangered and Threatened Wildlife and Plants; Designation of Critical Habitat for the Southern Sierra Nevada Distinct Population Segment of Fisher (Pekania pennanti)

Endangered and Threatened Wildlife and Plants; Compensatory Mitigation Mechanisms Under the Endangered Species Act

Conference of the Parties to the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES); Nineteenth Regular Meeting: Species Proposals for Consideration and Request for Information and Recommendations on Resolutions, Decisions, and Agenda Items for Consideration

Endangered and Threatened Wildlife and Plants; Designation of Experimental Populations

Endangered and Threatened Species; Receipt of an Incidental Take Permit Application for the Desert Tortoise; Availability of Draft Habitat Conservation Plan and Draft Environmental Assessment; Bellefield Solar Energy Project, Kern County, California

Endangered and Threatened Wildlife and Plants; Draft Recovery Plan, Second Revision, for the Mexican Wolf

Endangered and Threatened Wildlife and Plants; 90-Day Finding for Two Petitions to List the Gray Wolf in the Western United States

Endangered and Threatened Wildlife and Plants; Draft Recovery Plan for the New Mexico Meadow Jumping Mouse

Endangered and Threatened Wildlife and Plants; Listing Determination and Critical Habitat Designation for the Cactus Ferruginous Pygmy-Owl

Endangered and Threatened Wildlife and Plants; Revision to the Nonessential Experimental Population of the Mexican Wolf

Endangered and Threatened Wildlife and Plants; Threatened Species Status with Section 4(d) Rule for Alligator Snapping Turtle

Migratory Bird Permits; Authorizing the Incidental Take of Migratory Birds

Endangered and Threatened Wildlife and Plants; Endangered Species Status for the Peñasco Least Chipmunk and Designation of Critical Habitat

Endangered and Threatened Wildlife and Plants; Threatened Species Status with Section 4(d) Rule for the Northern Distinct Population Segment and Endangered Status for the Southern Distinct Population Segment of the Lesser Prairie-Chicken

Endangered and Threatened Wildlife and Plants; Draft Recovery Plan for the Rufa Red Knot

Marine Mammals; Incidental Take During Specified Activities; Proposed Incidental Harassment Authorization for Polar Bears in the Arctic National Wildlife Refuge, Alaska; Availability of Draft Environmental Assessment; Request for Comments

Endangered and Threatened Wildlife and Plants; Revision of the Regulations for Designating Critical Habitat

Endangered and Threatened Wildlife and Plants; Regulations for Listing Endangered and Threatened Species and Designating Critical Habitat

Refuge-Specific Regulation; Public Use; Kenai National Wildlife Refuge

Endangered and Threatened Wildlife and Plants; Revision to the Nonessential Experimental Population of the Mexican Wolf (Canis lupus baileyi)

Proposed Revision to the Nonessential Experimental Population of the Mexican Wolf

Non-Federal Oil and Gas Development Within the National Wildlife Refuge System

Removing the Gray Wolf from the List of Endangered and Threatened Wildlife and Maintaining Protections for the Mexican Wolf by Listing It as Endangered

Designation of Critical Habitat for Gunnison Sage-grouse

Notice of Intent to Prepare an Environmental Impact Statement for the Proposed Revision to the Nonessential Experimental Population of the Mexican Wolf and the Implementation of a Management Plan

Policy on Interpretation of the Phrase "Significant Portion of Its Range"

Bull Trout Revised Critical Habitat

Endangered and Threatened Wildlife and Plants; Special Rule for the Polar Bear