Bird
Ring-necked Duck
Aythya collaris
A winter visitor to Virginia, found in 120 of 133 counties and cities and 10 habitats.
- Here
- Winter and on migration
- Nesting
- Not known to nest here
- Range
- 120 of 133 counties and cities
- Habitats
- 10

At a glance
- Group
- Birds
- Here
- Winter and on migration
- Nesting
- Not known to nest here
- Range
- 120 of 133 counties and cities
- Habitats
- 10
- Habitat models
- Winter
Where it lives
The places its habitat model includes. It is not found everywhere a habitat occurs.
Habitats in Virginia 10
Each habitat page lists the plants and wildlife also found there.
Streams, rivers and their banks


Open sand of beaches, dunes and the hollows between them.
Disturbed and introduced wetlands
Wet ground taken over by weedy or introduced plants after disturbance, such as common reed, Chinese tallow or tamarisk stands; the upland counterpart is roadsides, fields and disturbed ground.
Floodplain and bottomland forests
Forests on low ground beside rivers and streams that flood from time to time.
Marshes along tidal rivers where the water is fresh but rises and falls with the tide.
Wet, open, peaty mountain wetlands fed by seepage, often with sphagnum moss.
Still water and its edges: ponds, lakes, millponds and reservoirs.
Coastal marshes flooded by salty or brackish tides.
Salt and brackish open water of sounds, bays and estuaries, with the mud and sand flats and seagrass beds that tides cover and uncover; the vegetated marsh is salt and brackish marshes.
Other habitats in its models (44)
Land cover, or classes with no habitat page in Virginia. Those recorded in Virginia first, the rest by region.
Elsewhere in the South (35)
- Atlantic Coastal Plain Central Fresh-Oligohaline Tidal Marsh Winter.
- Atlantic Coastal Plain Central Salt and Brackish Tidal Marsh Winter.
- Atlantic Coastal Plain Indian River Lagoon Tidal Marsh Winter.
- Atlantic Coastal Plain Small Blackwater River Floodplain Forest Winter.
- Atlantic Coastal Plain Xeric River Dune Winter.
- Central Florida Herbaceous Pondshore Winter.
- East Gulf Coastal Plain Savanna and Wet Prairie Winter.
- East Gulf Coastal Plain Tidal Wooded Swamp Winter.
- East-Central Texas Plains Floodplain Forest Winter.
- Florida Big Bend Fresh-Oligohaline Tidal Marsh Winter.
- Florida Big Bend Salt-Brackish Tidal Marsh Winter.
- Lower Mississippi River Flatwoods Winter, only within 120 m of water.
- Mississippi River Bottomland Depression Winter.
- Mississippi River Low Floodplain (Bottomland) Forest Winter.
- Mississippi Sound Salt and Brackish Tidal Marsh Winter.
- Red River Large Floodplain Forest Winter.
- South Florida Bayhead Swamp Winter.
- South Florida Cypress Dome Winter.
- South Florida Everglades Sawgrass Marsh Winter.
- South Florida Freshwater Slough and Gator Hole Winter.
- South Florida Mangrove Swamp Winter.
- South Florida Pine Flatwoods Winter, only within 120 m of water.
- South Florida Wet Marl Prairie Winter.
- South-Central Interior / Upper Coastal Plain Wet Flatwoods Winter.
- Southern Coastal Plain Blackwater River Floodplain Forest Winter.
- Southern Coastal Plain Herbaceous Seepage Bog Winter.
- Southern Coastal Plain Hydric Hammock Winter.
- Southern Coastal Plain Nonriverine Basin Swamp Winter.
- Southern Coastal Plain Nonriverine Cypress Dome Winter.
- Southern Coastal Plain Seepage Swamp and Baygall Winter.
- West Gulf Coastal Plain Large River Floodplain Forest Winter.
- West Gulf Coastal Plain Near-Coast Large River Swamp Winter.
- West Gulf Coastal Plain Nonriverine Wet Hardwood Flatwoods Winter.
- West Gulf Coastal Plain Pine-Hardwood Flatwoods Winter, only within 120 m of water.
- West Gulf Coastal Plain Seepage Swamp and Baygall Winter.
Northeast (1)
- North-Central Interior Wet Flatwoods Winter.
Land cover and other classes (8)
- Central Interior and Appalachian Shrub-Herbaceous Wetland Systems Winter.
- East Gulf Coastal Plain Large River Floodplain Forest - Forest Modifier Winter.
- Lower Mississippi River Bottomland Depressions - Forest Modifier Winter.
- South-Central Interior Large Floodplain - Herbaceous Modifier Winter.
- Southern Coastal Plain Nonriverine Basin Swamp - Okefenokee Bay/Gum Modifier Winter.
- Texas-Louisiana Coastal Prairie Slough Winter.
- Unconsolidated Shore Winter.
- Unconsolidated Shore (Lake/River/Pond) Winter.
Seasons in Virginia
- Migratory: does not nest here, in 1 of 133 counties and cities.
- Winter: does not nest here, in 120 of 133 counties and cities.
Food plants
Diet records by plant genus, from studies across North America. Not a record from this state. Plants matched by genus.
Native plants in these genera 189
- American Halfchaff SedgeCyperus neotropicalis
- Cyperus lupulinus subsp. lupulinusCyperus lupulinus subsp. lupulinus
- Cyperus lupulinus subsp. macilentusCyperus lupulinus subsp. macilentus
- Low SpikesedgeCyperus hortensis
- Smallflower Halfchaff SedgeCyperus subsquarrosus
- Umbrella Flat SedgeCyperus diandrus
- Pine-barren FlatsedgeCyperus retrorsus
- Baldwins Flat SedgeCyperus croceus
- Bristly FlatsedgeCyperus hystricinus
- Cyperus filicinusCyperus filicinus
- Globe FlatsedgeCyperus echinatus
- Granite FlatsedgeCyperus granitophilus
- Gray's FlatsedgeCyperus grayi
- Houghton's FlatsedgeCyperus houghtonii
- Many-spike FlatsedgeCyperus polystachyos
- Manyflower FlatsedgeCyperus lancastriensis
- Marsh FlatsedgeCyperus pseudovegetus
- Plukenet's FlatsedgeCyperus plukenetii
- Poorland FlatsedgeCyperus compressus
- Redroot FlatsedgeCyperus erythrorhizos
- Reflexed FlatsedgeCyperus refractus
- Rough FlatsedgeCyperus retrofractus
- Sheathed FlatsedgeCyperus haspan
- Slender FlatsedgeCyperus bipartitus
Plant genera in its diet records (28)
- Cyperus Seeds and roots. 6 diet records. 30 native plants in Virginia
- Scirpus Seeds. 6 diet records. 11 native plants in Virginia
- Eleocharis 5 diet records. 30 native plants in Virginia
- Potamogeton Seeds. 5 diet records. 17 native plants in Virginia
- Ceratophyllum Seeds. 4 diet records. 2 native plants in Virginia
- Lachnanthes Seeds and roots. 4 diet records. 1 native plant in Virginia
- Myriophyllum Seeds. 4 diet records. 4 native plants in Virginia
- Polygonum Seeds. 4 diet records. 3 native plants in Virginia
- Chara Other parts. 3 diet records. 0 native plants in Virginia
- Echinochloa Seeds. 3 diet records. 3 native plants in Virginia
- Phalaris Seeds. 3 diet records. 2 native plants in Virginia
- Bolboschoenus Seeds. 2 diet records. 3 native plants in Virginia
- Brasenia 2 diet records. 1 native plant in Virginia
- Nymphaea Seeds. 2 diet records. 1 native plant in Virginia
- Panicum Seeds. 2 diet records. 7 native plants in Virginia
- Persicaria Seeds. 2 diet records. 11 native plants in Virginia
- Pinus 2 diet records. 8 native plants in Virginia
- Ruppia 2 diet records. 1 native plant in Virginia
- Sparganium Seeds. 2 diet records. 3 native plants in Virginia
- Stuckenia Roots. 2 diet records. 1 native plant in Virginia
- Zea Seeds. 2 diet records. 0 native plants in Virginia
- Boehmeria 1 diet record. 1 native plant in Virginia
- Chenopodium Seeds. 1 diet record. 3 native plants in Virginia
- Hypericum 1 diet record. 22 native plants in Virginia
- Lemna Leaves. 1 diet record. 7 native plants in Virginia
- Leptochloa Seeds. 1 diet record. 0 native plants in Virginia
- Morella 1 diet record. 4 native plants in Virginia
- Sagittaria Roots. 1 diet record. 13 native plants in Virginia
Also found in its main habitats
Its main habitats in Virginia, by how much of its habitat model each one is, with the birds most characteristic of each and the plants that grow wild there. Shared habitat, not food.
Floodplain and bottomland forests
Birds 86
- Lincoln's SparrowMelospiza lincolnii
- Snowy OwlBubo scandiacus
- Willow FlycatcherEmpidonax traillii
- Brewer's BlackbirdEuphagus cyanocephalus
- Northern WaterthrushSeiurus noveboracensis
- GadwallAnas strepera
- Yellow-throated WarblerDendroica dominica
- Black-throated Blue WarblerDendroica caerulescens
- Glossy IbisPlegadis falcinellus
- Great CormorantPhalacrocorax carbo
- Least BitternIxobrychus exilis
- Louisiana WaterthrushSeiurus motacilla
Plants 381
- Elliott's BlueberryVaccinium elliottii
- Possumhaw HollyIlex decidua
- Cherrybark OakQuercus pagoda
- Appalachian Orange ConeflowerRudbeckia fulgida var. umbrosa
- Shagbark HickoryCarya ovata
- Southern Shagbark HickoryCarya carolinae-septentrionalis
- Spreading SedgeCarex laxiculmis
- Louisiana SedgeCarex louisianica
- Common Cup-plantSilphium perfoliatum
- Smooth Hedge-nettleStachys tenuifolia
- Virginia Cup-plantSilphium connatum
- Coville's PhaceliaPhacelia covillei
Swamps
Birds 82
- Gull-billed TernGelochelidon nilotica
- Brewer's BlackbirdEuphagus cyanocephalus
- Eurasian WigeonAnas penelope
- King RailRallus elegans
- Northern WaterthrushSeiurus noveboracensis
- Red-breasted NuthatchSitta canadensis
- RedheadAythya americana
- Tricolored HeronEgretta tricolor
- Black RailLaterallus jamaicensis
- Red-breasted MerganserMergus serrator
- Ruddy TurnstoneArenaria interpres
- Yellow-throated WarblerDendroica dominica
Plants 318
- Dense-flower SmartweedPersicaria densiflora
- Carolina AshFraxinus caroliniana
- Water HickoryCarya aquatica
- Bent SedgeCarex styloflexa
- Cypress-swamp SedgeCarex joorii
- Fringed SedgeCarex crinita
- Ravenfoot SedgeCarex crus-corvi
- Weak Stellate SedgeCarex seorsa
- Swamp ButtercupRanunculus septentrionalis
- Drooping BulrushScirpus lineatus
- Shield Marsh-pennywortHydrocotyle verticillata
- Spreading BulrushScirpus divaricatus
Coastal dunes and beaches
Birds 108
- DovekieAlle alle
- Marbled GodwitLimosa fedoa
- Saltmarsh Sharp-tailed SparrowAmmodramus caudacutus
- Short-billed DowitcherLimnodromus griseus
- Wilson's PloverCharadrius wilsonia
- Great Black-backed GullLarus marinus
- Horned LarkEremophila alpestris
- Nelson's Sharp-tailed SparrowAmmodramus nelsoni
- Purple SandpiperCalidris maritima
- SanderlingCalidris alba
- Sandwich TernThalasseus sandvicensis
- Seaside SparrowAmmodramus maritimus
Plants 109
- Maritime ThoroughwortEupatorium maritimum
- Seabeach KnotweedPolygonum glaucum
- Northern BayberryMorella pensylvanica
- Seabeach AmaranthAmaranthus pumilus
- Northern Seaside SpurgeEuphorbia polygonifolia
- Southern Seaside SpurgeEuphorbia bombensis
- Mound-lily YuccaYucca gloriosa
- Largeleaf PennywortHydrocotyle bonariensis
- Rough American Barnyard GrassEchinochloa muricata var. muricata
- Northern Seabeach OrachAtriplex mucronata
- Dune Marsh-elderIva imbricata
- American SearocketCakile edentula
Sources
- USGS Gap Analysis Project habitat models (2001)
- USGS GAP winter habitat model for Ring-necked Duck Slow streams only
- USGS Gap Analysis Project range maps (2001), modeled by watershed; migratory gives no dates
- NatureServe Explorer (CC BY 4.0), habitat names
- US Census TIGER/Line counties
- Names follow the USGS Gap Analysis Project (2001)
- Avian Diet Database (Hurlbert Lab) (CC0 1.0), diet records by plant genus
































































