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Region 1 · 2026-27 rules
Polk County Hunting
Where Polk County sits in the 2026-2027 DNR rules: 6 deer permit areas (661, 210 and 256 and 3 more) with designations and season windows, CWD status, bear and turkey permit areas, 69,402 mapped public acres and the nearest wildlife office.
Photo: Tony Webster (CC BY 2.0)
Crookston anchors Polk County, a county of 1,971 land square miles and 27 water square miles. About 30,413 residents call it home, after a 2.5% drop since 2020. DNR counts it in Region 1 (Northwest), with regional headquarters in Bemidji. On the 2026 deer map the county falls inside DPAs 661, 210, 256, 257, 265 and 209. State and federal land mapped inside the county totals some 69,402 acres.
Land area from the Census 2024 Gazetteer, population from Census Vintage 2024 estimates, region from the DNR county region list, DPAs from the DNR deer permit area layer, public acres from DNR, USFS and USFWS GIS layers (not official acreages). Checked October 28, 2026.
Nearby
Places to hunt and shoot around Polk County
Polk County DPA designations and lottery quotas
6 deer permit areas touch Polk County; 661 alone accounts for 38% of it. The booklet list for 2026 gives 3-deer in 661, 257, 265 and 209; 2-deer in 210 and 256. For the firearm opener weekend and after: 661, 210, 256, 257, 265 and 209 with nine days from Nov. 7. 661: early antlerless season Oct. 15 through 18. The statewide cap is five deer and one buck. This season the DNR lets hunters who fill one DPA limit hunt a different DPA.
| Permit area | Share | Status | Quota | Bow season | Gun season | Muzzleloader |
|---|---|---|---|---|---|---|
| 661 | 38% | 3-deer | — | Sept. 19–Dec. 31 | Nov. 7–Nov. 15 | Nov. 28–Dec. 13 |
| 210 | 18% | 2-deer | — | Sept. 19–Dec. 31 | Nov. 7–Nov. 15 | Nov. 28–Dec. 13 |
| 256 | 18% | 2-deer | — | Sept. 19–Dec. 31 | Nov. 7–Nov. 15 | Nov. 28–Dec. 13 |
| 257 | 11% | 3-deer | — | Sept. 19–Dec. 31 | Nov. 7–Nov. 15 | Nov. 28–Dec. 13 |
| 265 | 8% | 3-deer | — | Sept. 19–Dec. 31 | Nov. 7–Nov. 15 | Nov. 28–Dec. 13 |
| 209 | 5% | 3-deer | — | Sept. 19–Dec. 31 | Nov. 7–Nov. 15 | Nov. 28–Dec. 13 |
| DPA | Series | Youth hunt | Early antlerless | Late hunt | CWD | Area | Share in county |
|---|---|---|---|---|---|---|---|
| 661 | 600 | Oct. 15–Oct. 18 | Oct. 15–Oct. 18 | — | Mgmt zone | 796 | 97% |
| 210 | 200 | Oct. 15–Oct. 18 | — | — | Voluntary | 635 | 58% |
| 256 | 200 | Oct. 15–Oct. 18 | — | — | Voluntary | 655 | 55% |
| 257 | 200 | Oct. 15–Oct. 18 | — | — | Voluntary | 426 | 50% |
| 265 | 200 | Oct. 15–Oct. 18 | — | — | Voluntary | 495 | 32% |
| 209 | 200 | Oct. 15–Oct. 18 | — | — | Voluntary | 640 | 15% |
DPA 661 · DPA 210 · DPA 256 · DPA 257 · DPA 265 · DPA 209 · DPA pages · Antlerless lottery
Shares, designations and dates from the DNR deer permit area layer (2026 seasons) and the booklet DPA designation list; lottery quotas from the booklet lottery page; limits from the booklet deer rules. Checked October 28, 2026.
Deer numbers for the Polk County permit areas
Because deer are registered by permit area, the numbers on this page belong to DPA 661 and its neighbours, not to Polk County alone. For 2025 the DPA 661 total is 437 deer, 143 adult does among them. Buck harvest density in DPA 661 was 0.33 per square mile in 2025. The state total for 2025 stood at 186,368 deer.
| Permit area | Of county | Of DPA | Deer 2023 | Deer 2024 | Deer 2025 | Bucks/sq mi |
|---|---|---|---|---|---|---|
| 661 | 38% | 97% | 429 | 432 | 437 | 0.33 |
| 210 | 18% | 58% | 1,383 | 1,331 | 1,487 | 1.64 |
| 256 | 18% | 55% | 867 | 1,033 | 1,042 | 0.97 |
| 257 | 11% | 50% | 872 | 928 | 979 | 1.32 |
| 265 | 8% | 32% | 930 | 1,067 | 1,177 | 1.21 |
| 209 | 5% | 15% | 1,234 | 1,380 | 1,486 | 1.18 |
DPA 661 year by year
| Year | Adult bucks | Male fawns | Adult does | Female fawns | Deer |
|---|---|---|---|---|---|
| 2025 | 264 | 16 | 143 | 14 | 437 |
| 2024 | 237 | 27 | 153 | 15 | 432 |
| 2023 | 224 | 27 | 151 | 27 | 429 |
| 2022 | 195 | 27 | 155 | 15 | 392 |
DNR 2025 registered deer harvest report and earlier yearly reports (2017-2024); statewide totals from the DNR deer harvest statistics. Checked October 28, 2026.
Polk County season dates, 2026-27
27 species and 53 dated windows touch Polk County; the last column compares each one with today.
| Quarry | Season | Permit area | From | To | Status today |
|---|---|---|---|---|---|
| White-tailed deer | Archery | All DPAs here | Sep 19, 2026 | Dec 31, 2026 | |
| White-tailed deer | Early antlerless | DPA 661 | Oct 15, 2026 | Oct 18, 2026 | |
| White-tailed deer | Youth deer | All DPAs here | Oct 15, 2026 | Oct 18, 2026 | |
| White-tailed deer | Firearms (200 series) | All DPAs here | Nov 7, 2026 | Nov 15, 2026 | |
| White-tailed deer | Muzzleloader | Statewide | Nov 28, 2026 | Dec 13, 2026 | |
| Black bear | No-quota area | No Quota Area | Sep 1, 2026 | Oct 18, 2026 | |
| Wild turkey | Fall | Statewide | Oct 3, 2026 | Nov 1, 2026 | |
| Wild turkey | Spring archery-only | Statewide | Apr 14, 2027 | May 31, 2027 | |
| Wild turkey | Spring period A | Statewide | Apr 14, 2027 | Apr 20, 2027 | |
| Wild turkey | Spring youth | Statewide | Apr 14, 2027 | May 31, 2027 | |
| Wild turkey | Spring period B | Statewide | Apr 21, 2027 | Apr 27, 2027 | |
| Wild turkey | Spring period C | Statewide | Apr 28, 2027 | May 4, 2027 | |
| Wild turkey | Spring period D | Statewide | May 5, 2027 | May 11, 2027 | |
| Wild turkey | Spring period E | Statewide | May 12, 2027 | May 18, 2027 | |
| Wild turkey | Spring period F | Statewide | May 19, 2027 | May 31, 2027 | |
| Pheasant | Regular | Statewide | Oct 10, 2026 | Jan 3, 2027 | |
| Ruffed and spruce grouse | Regular | Statewide | Sep 19, 2026 | Jan 3, 2027 | |
| Sharp-tailed grouse | Northwest zone | Northwest zone (north part) | Sep 19, 2026 | Nov 30, 2026 | |
| Hungarian partridge | Regular | Statewide | Sep 19, 2026 | Jan 3, 2027 | |
| Prairie chicken | By lottery permit | Permit areas 803A, 804A, 805A, 806A, 813A | Sep 26, 2026 | Oct 4, 2026 | |
| Woodcock | Regular | Statewide | Sep 19, 2026 | Nov 2, 2026 | |
| Mourning dove | Regular | Statewide | Sep 1, 2026 | Nov 29, 2026 | |
| Rabbits and hares | Regular | Statewide | Sep 19, 2026 | Feb 28, 2027 | |
| Jackrabbit | Regular | Statewide | Sep 19, 2026 | Feb 28, 2027 | |
| Squirrels | Regular | Statewide | Sep 19, 2026 | Feb 28, 2027 | |
| Crow | Crow segment | Statewide | Sep 1, 2026 | Oct 31, 2026 | |
| Rails | Regular | Statewide | Sep 1, 2026 | Nov 9, 2026 | |
| Snipe | Regular | Statewide | Sep 1, 2026 | Dec 16, 2026 | |
| Canada Goose | Early geese | Statewide | Sep 5, 2026 | Sep 20, 2026 | |
| Snow, Blue and Ross's Geese | Early geese | Statewide | Sep 5, 2026 | Sep 20, 2026 | |
| Ducks | Early teal season | Statewide | Sep 5, 2026 | Sep 9, 2026 | |
| Sandhill crane | Northwest zone | Northwest crane zone | Sep 12, 2026 | Oct 18, 2026 | |
| Ducks | Youth days | Statewide | Sep 12, 2026 | Sep 13, 2026 | |
| Ducks | Regular ducks | North Zone | Sep 26, 2026 | Nov 24, 2026 | |
| Ducks | Regular ducks | Central Zone | Sep 26, 2026 | Oct 4, 2026 | |
| Ducks | Regular ducks | South Zone | Sep 26, 2026 | Oct 4, 2026 | |
| Canada Goose | Regular geese | North Zone | Sep 26, 2026 | Dec 25, 2026 | |
| Canada Goose | Regular geese | Central Zone | Sep 26, 2026 | Oct 4, 2026 | |
| Canada Goose | Regular geese | South Zone | Sep 26, 2026 | Oct 4, 2026 | |
| Take-a-Kid weekend | Take-a-Kid | Statewide | Sep 26, 2026 | Sep 27, 2026 | |
| Ducks | Regular ducks | Central Zone | Oct 10, 2026 | Nov 29, 2026 | |
| Canada Goose | Regular geese | Central Zone | Oct 10, 2026 | Dec 30, 2026 | |
| Raccoon | Hunting (north) | North furbearer zone | Oct 17, 2026 | Mar 15, 2027 | |
| American Badger | Hunting (north) | North furbearer zone | Oct 17, 2026 | Mar 15, 2027 | |
| Ducks | Regular ducks | South Zone | Oct 17, 2026 | Dec 6, 2026 | |
| Canada Goose | Regular geese | South Zone | Oct 17, 2026 | Jan 6, 2027 | |
| Raccoon | Hunting (south) | South furbearer zone | Oct 24, 2026 | Mar 15, 2027 | |
| American Badger | Hunting (south) | South furbearer zone | Oct 24, 2026 | Mar 15, 2027 | |
| Bobcat | Hunt and trap (north) | North furbearer zone | Dec 12, 2026 | Jan 17, 2027 | |
| Crow | Crow segment | Statewide | Dec 15, 2026 | Jan 15, 2027 | |
| Bobcat | Hunt and trap (south) | South furbearer zone | Jan 2, 2027 | Jan 17, 2027 | |
| Snow, Blue and Ross's Geese | Spring light goose | Statewide | Feb 18, 2027 | Apr 30, 2027 | |
| Crow | Crow segment | Statewide | Mar 1, 2027 | Mar 31, 2027 |
From the 2026-2027 Minnesota Hunting and Trapping Regulations booklet (Minnesota Department of Natural Resources) and the DNR deer permit area map, checked October 28, 2026.
Local rules hunters ask about in Polk County
661 is in the CWD management zone, so the carcass disposal rule applies: carcasses leave only for a landfill, a refuse hauler, a Minnesota processor or taxidermist, or the private land where the deer fell. Disease management permits stretch the antlerless take inside the zone. Feeding deer and using deer attractants are banned in Polk County, one of 37 CWD counties. No county shotgun ordinance applies in Polk County, so the old shotgun zone line no longer matters here. Wear orange or pink above the waist in firearm deer seasons; sleeves and gloves do not count. Validation comes first, before the animal is moved; registration follows within 48 hours.
Where CWD turned up
| Year | Finding | Positive |
|---|---|---|
| 2022 | Winter: Grand Rapids 2, southeast 18 (culling). Fall: southeast 19, DPA 605 5, DPA 184 2 (DPAs 661 and 679 management zones created). | 46 |
| 2024 | Winter: DPA 661 1 (shooting permit), southeast 17 (culling). Fall: first detections in DPAs 266, 271 and 701; south metro 1, Climax 1, southeast 86. | — |
Carcass rules · Hunting laws · License fees
CWD zones from the booklet CWD page and the CWD rules; history from the DNR CWD page; shotgun ordinances from the booklet firearm page; orange from the booklet clothing rule; registration from the booklet registration page. Checked October 28, 2026.
Polk County bear areas, turkey and waterfowl lines
Bear season
All of Polk County lies in the no-quota area, where bear licenses are unlimited and sold over the counter. Bear season runs Sept. 1 to Oct. 18, and baiting may start Aug. 14 at registered stations.
Turkey
Turkey permit area over Polk County: 509 (100%). Area 509 registered 781 spring turkeys in 2026, up from 250 in 2019. Permits declaring area 509 in 2026: 2,749. Turkeys must be registered within 24 hours of harvest.
| Permit area | Of county | 2023 | 2024 | 2025 | 2026 | Fall 2025 |
|---|---|---|---|---|---|---|
| 509 | 100% | 503 | 672 | 726 | 781 | 76 |
Elk and grouse zones
DNR map reading puts prairie chicken areas 803A (6 licenses), 804A (8 licenses), 805A (8 licenses), 806A (10 licenses) and 813A (5 licenses) in Polk County. Sharp-tailed grouse are open here in the northwest zone, Sept. 19 to Nov. 30; the east-central zone stays closed. The sandhill crane zone takes in the county (read from the DNR map).
Migratory birds
Waterfowl zone lines follow highways rather than county lines, so Polk County hunters should check the DNR zone map for their marsh. Raccoon, fox and bobcat dates change at the I-94/US 10 furbearer line. The county holds 2 state game refuges; each is closed unless the table says otherwise.
Game refuges here
| Refuge | Small game | Ducks | Firearms | Archery | Traps |
|---|---|---|---|---|---|
| Oak Lake | Closed | Closed | Closed | Closed | Open |
| Polk-Clearwater | Closed | Closed | Closed | Open | Open |
Bear area list · Turkey permit areas · Waterfowl zones · Refuge table
Bear areas and permits from the 2026 bear regulations; BMU harvest from the DNR bear status report; turkey areas and harvest from the DNR turkey harvest reports; elk from the DNR elk page; prairie chicken from the DNR prairie chicken page (map-read); waterfowl lines from the DNR waterfowl page; refuges from the booklet refuge table. Checked October 28, 2026.
Public land and WMAs in Polk County
The 89 Polk County listings break down as 45 wildlife management areas, 40 waterfowl production areas, 2 national wildlife refuges and 1 wetland management district. Waterfowl production areas, open under federal rules, cover about 13,928 acres. State park acres count toward the total but hunt only by special hunt.
- Wetland management districts: 1Detroit Lakes Wetland Management District (51,280 acres*)
- Wildlife management areas: 45Pembina Wildlife Management Area (6,677 acres*), Polk Wildlife Management Area (2,764 acres), Chicog Wildlife Management Area (2,434 acres), Mentor Prairie Wildlife Management Area (2,184 acres), Maple Meadows Wildlife Management Area (1,394 acres), Liberty Wildlife Management Area (1,369 acres), Crane Wildlife Management Area (1,297 acres*), Erskine Wildlife Management Area (1,221 acres), Thorson Prairie Wildlife Management Area (1,109 acres), Burnham Wildlife Management Area (990 acres), Dugdale Wildlife Management Area (960 acres), Tympanuchus Wildlife Management Area (848 acres), Trail Wildlife Management Area (609 acres), Larix Wildlife Management Area (590 acres), Gully Wildlife Management Area (446 acres), Tilden Wildlife Management Area (426 acres), Dorr Wildlife Management Area (378 acres), Kertsonville Wildlife Management Area (371 acres), Enerson Wildlife Management Area (283 acres), Onstad Wildlife Management Area (280 acres), Hovland Wildlife Management Area (220 acres), Hasselton Wildlife Management Area (216 acres), Kakaik Wildlife Management Area (204 acres), Belgium Wildlife Management Area (190 acres), Sagaiigan Wildlife Management Area (178 acres), Stipa Wildlife Management Area (162 acres), Shypoke Wildlife Management Area (161 acres), Le Blanc Wildlife Management Area (159 acres*), Timber Doodle Wildlife Management Area (158 acres), Godfrey Wildlife Management Area (145 acres), +15 on the hub
- National wildlife refuges, 2 listedGlacial Ridge National Wildlife Refuge (23,763 acres), Rydell National Wildlife Refuge (2,077 acres)
- Waterfowl production areas in Polk (40)Winger Waterfowl Production Area (1,758 acres), Erskine Complex Waterfowl Production Area (1,348 acres), Melvin Slough Waterfowl Production Area (1,212 acres), Clarke Waterfowl Production Area (868 acres), Hill River Waterfowl Production Area (630 acres), Jenkins Waterfowl Production Area (598 acres), Vesledahl Waterfowl Production Area (571 acres), Gustafson Waterfowl Production Area (448 acres), Hagen Waterfowl Production Area (383 acres), Salvhus Waterfowl Production Area (380 acres), Jacobson Waterfowl Production Area (362 acres*), Maple Lake Waterfowl Production Area (357 acres), Beito Waterfowl Production Area (323 acres), Smith Waterfowl Production Area (322 acres), Woodside Waterfowl Production Area (315 acres), Union Lake Waterfowl Production Area (298 acres), Sollie Enterprises Waterfowl Production Area (297 acres), Maltrod Lake Waterfowl Production Area (295 acres), Lengby Waterfowl Production Area (233 acres), Mee Waterfowl Production Area (216 acres), Aasen Waterfowl Production Area (200 acres), Moren Waterfowl Production Area (191 acres), Turtle Lake Waterfowl Production Area (169 acres), Espeseth Waterfowl Production Area (163 acres), Halverson Waterfowl Production Area (163 acres), Vaa Waterfowl Production Area (161 acres), Lepier Waterfowl Production Area (160 acres), Haslie Lake Waterfowl Production Area (160 acres), Hanson Waterfowl Production Area (158 acres), Sand Hill Lake Waterfowl Production Area (152 acres), +10 on the hub
- Scientific and natural areas: 1Gully Fen Scientific and Natural Area (1,626 acres)
Nearest land outside Polk
- Huot Wildlife Management Area7 miles by map · 425 acres
- Moran Wildlife Management Area8 miles by map · 426 acres
- Marcoux Wildlife Management Area8 miles by map · 380 acres
- Gervais Wildlife Management Area15 miles by map · 83 acres
- Terrebonne Wildlife Management Area15 miles by map · 1 acres
Plan around Agassiz Dunes Scientific and Natural Area, Malmberg Prairie Scientific and Natural Area, McIntosh Waterfowl Production Area and Pembina Trail Scientific and Natural Area, where hunting is not allowed.
Minnesota public land · WMA list · Walk-In sites · WPA list
Units from our Minnesota land list (DNR WMA, SNA, AMA, forest and park pages, USFWS and USFS records); acres by kind from the DNR management units layer, the USFS ownership layer and the USFWS interest layer (GIS measures); Walk-In Access from the DNR Walk-In Access program; special hunts from the booklet special hunt tables. Checked October 28, 2026.
DNR offices, processors and shops for Polk County
Businesses inside Polk County come first; the nearest in bordering counties fill each group.
DNR offices
For Polk County, the DNR regional office is in Bemidji. Thief River Falls is the work area for 100% of the county.
Processors
Taxidermy
Hunting preserves
Gun and archery shops
Offices from the DNR wildlife area offices and DNR regions pages; processors from the MDA venison donation list, the DNR CWD partner list and directories; shops from directories and store locators. Checked October 28, 2026; call ahead. All Minnesota hunting services.
Town guides and neighbours for Polk County
Polk County has 3 town guides, seat first; each lists the public land within reach and the nearest shops.
- Crookstonseat · 7,269 residents (2024) · 573 public ac nearby
- Erskine387 residents (2024) · 19,819 public ac nearby
- Fertile780 residents (2024) · 20,439 public ac nearby
Cross the Polk County boundary and you enter one of 6 counties, or Grand Forks (ND) and Traill (ND).
Towns from the Census 2024 Gazetteer and Vintage 2024 estimates; adjacency from the Census county adjacency file.
Shooting ranges and gun clubs for Polk County
Up to six Polk County ranges appear as cards; the rest are in the table below.
No city, county or park district range lies within 60 miles of the Polk County centre, and the DNR range list could not be read, so clubs and private ranges are the options here. DNR range map
Shoots coming up here
Ranges from the operators’ pages and directory listings, checked October 28, 2026. The DNR Shooting Range Finder could not be read.
Polk County shooting time on key dates
Pheasant hunting starts at 9 a.m. and runs to sunset, early teal runs sunrise to sunset, and big game gets the half hour on each end.
| Date | Moment | Sunrise | Sunset | Deer, bear, elk | Waterfowl |
|---|---|---|---|---|---|
| Sep 19, 2026 | Archery and grouse opener | 7:07 a.m. | 7:32 p.m. | 6:37 a.m. to 8:02 p.m. | 6:37 a.m. to 7:32 p.m. |
| Sep 26, 2026 | Duck opener | 7:16 a.m. | 7:18 p.m. | 6:46 a.m. to 7:48 p.m. | 6:46 a.m. to 7:18 p.m. |
| Oct 10, 2026 | Pheasant opener | 7:35 a.m. | 6:49 p.m. | 7:05 a.m. to 7:19 p.m. | 7:05 a.m. to 6:49 p.m. |
| Nov 7, 2026 | Firearms deer opener | 7:18 a.m. | 5:01 p.m. | 6:48 a.m. to 5:31 p.m. | 6:48 a.m. to 5:01 p.m. |
| Nov 28, 2026 | Muzzleloader opener | 7:49 a.m. | 4:39 p.m. | 7:19 a.m. to 5:09 p.m. | 7:19 a.m. to 4:39 p.m. |
| Dec 31, 2026 | Archery close | 8:14 a.m. | 4:42 p.m. | 7:44 a.m. to 5:12 p.m. | 7:44 a.m. to 4:42 p.m. |
| Apr 14, 2027 | Spring turkey opener | 6:40 a.m. | 8:12 p.m. | 6:10 a.m. to 8:42 p.m. | 6:10 a.m. to 8:12 p.m. |
Hours rule from the DNR booklet shooting hours page; sun times calculated for the county centre (NOAA method, Central Time), checked against U.S. Naval Observatory tables; checked October 28, 2026. Legal hours for every county.
Polk County on the hunting calendar
No dated event ahead listed. Kinds: classes held this year.
Firearms safety in Polk County: 5 DNR classes on the 2026 calendar, 4 of them full on the check date. The class list.
Hunting questions about Polk County
Which public land is closest to Polk County outside the county?
Huot Wildlife Management Area, about 7 miles from the centre.
Which turkey permit area is Polk County in?
509.
Is Polk County in the North, Central or South duck zone?
DNR draws the zones only as highway lines on a map (MN 210/23/39 and US 212/I-494/I-94); check the map for your spot.
What happens after I shoot a deer in Polk County?
Validate at the kill site, then register within 48 hours online, in the app or at a walk-in station.
Do county lines set deer rules in Polk County?
No. Deer permit area lines do; the DPA table above lists each one and its share of the county.
Who handles cut-and-wrap for Polk County deer?
Headwaters Meat Processing sits closest on our list; phone before you drop a deer off.
Is Polk County still shotgun only?
No. It is not among the 13 counties with a shotgun-only or partial ordinance.
Where do I dump a deer carcass from Polk County?
In the management zone, at a landfill, with a refuse hauler, a processor or taxidermist, or on the land of harvest.
Does DNR count bears by county for Polk County?
No. Bear harvest is reported by bear management unit.
Does DNR publish deer harvest by county for Polk County?
No. Registered deer are reported by deer permit area only; this page shows the DPA totals.
Answers from the 2026-2027 Minnesota Hunting and Trapping Regulations booklet, the DNR deer permit area layer, DNR harvest reports and the sources above. Checked October 28, 2026.
Trip checklist for Polk County
Permit area lines and designations in and around Polk County change between seasons; open the DPA page and the booklet before you go.
Sources: 2026-2027 Minnesota Hunting and Trapping Regulations, DNR hunting, Census and the agencies linked in each section. Checked October 28, 2026.
Other photos on this page: U.S. Fish and Wildlife Service (Public Domain Mark 1.0); YellowstoneNPS (Public domain); Matt Lavin (CC BY-SA 2.0); Matt Lavin (CC BY-SA 2.0); U.S. Fish and Wildlife Service (Public Domain Mark 1.0); U.S. Fish and Wildlife Service (Public Domain Mark 1.0); U.S. Fish and Wildlife Service (Public Domain Mark 1.0); U.S. Fish and Wildlife Service (Public Domain Mark 1.0).