Species Explorer

Browse and search species from the IUCN Red List and GBIF.

54,666 species

White-fronted Woodpecker

VU

Melanerpes cactorum

Pop: Not assessed|Trend:

White-legged Damselfly, Blue featherleg

VU

Platycnemis pennipes

Pop: Not assessed|Trend:

White-letter Hairstreak

CR

Satyrium w-album

Pop: Not assessed|Trend:

The White-letter Hairstreak faces severe population declines primarily due to Dutch elm disease, which has devastated its primary host plant, elm trees, across much of its range. Habitat fragmentation and loss of mature elm trees through urban development and agricultural intensification have further reduced available breeding sites. Climate change may also be affecting the synchronization between butterfly emergence and elm leaf development.

White-mantled Barbet

VU

Capito hypoleucus

Pop: Not assessed|Trend:

White-mantled Wainscot

VU

Archanara neurica

Pop: Not assessed|Trend:

White-rumped Vulture

CR

Gyps bengalensis

Pop: Not assessed|Trend:

The White-rumped Vulture has experienced one of the most catastrophic population declines in avian history, with populations crashing by over 99% since the 1990s. The primary cause is diclofenac poisoning from livestock carcasses, which causes fatal kidney failure in vultures. Additional threats include habitat loss, food scarcity, and secondary poisoning from other veterinary drugs.

White-spotted Pinion

VU

Cosmia diffinis

Pop: Not assessed|Trend:

White-starred Goby

VU

Chriolepis dialepta

Pop: Not assessed|Trend:

White-streaked Antvireo

VU

Dysithamnus leucostictus

Pop: Not assessed|Trend:

White-tailed Deer

CR

Odocoileus virginianus

Pop: Not assessed|Trend:

White-tailed Deer face severe population declines in certain regions due to habitat fragmentation from urban development and agricultural expansion, which isolates populations and reduces genetic diversity. Vehicle strikes on roads fragmenting their habitat cause significant mortality, while climate change alters vegetation patterns and increases disease transmission rates. Conservation status may vary by region or assessment authority, with some local populations experiencing critical declines despite broader species distribution.

White-tailed Jay

VU

Cyanocorax mystacalis

Pop: Not assessed|Trend:

White-throated Dipper

CR

Cinclus cinclus

Pop: Not assessed|Trend:

The White-throated Dipper faces severe threats from water pollution, habitat degradation, and climate change impacts on freshwater ecosystems. Industrial runoff, agricultural chemicals, and urban development have contaminated and altered the clean, fast-flowing streams essential for this species' survival. Conservation status may vary by region or assessment authority, but declining water quality and stream modification represent critical threats across much of its range.

White-Throated Toucan

VU

Ramphastos tucanus

Pop: Not assessed|Trend:

White-vented Plumeleteer

EN

Chalybura buffonii

Pop: Not assessed|Trend:

White-winged apalis

VU

Apalis chariessa

Pop: Not assessed|Trend:

Whiting

VU

Merlangius merlangus

Pop: Not assessed|Trend:

Whooper Swan

VU

Cygnus cygnus

Pop: Not assessed|Trend:

Whorl-grass

VU

Catabrosa aquatica

Pop: Not assessed|Trend:

Whorled Sage

EN

Salvia verticillata

Pop: Not assessed|Trend:

Whorled Tufa-moss

VU

Eucladium verticillatum

Pop: Not assessed|Trend:

Wide-leaf low sedge

VU

Carex pediformis

Pop: Not assessed|Trend:

Wider's Tree-chernes

EN

Allochernes wideri

Pop: Not assessed|Trend:

Wiegmann's tree iguana

VU

Liolaemus wiegmannii

Pop: Not assessed|Trend:

Wiesenrauten-Blattzikade

VU

Micantulina micantula

Pop: Not assessed|Trend:

Wigeon

CR

Mareca penelope

Pop: Not assessed|Trend:

The Wigeon faces severe population declines due to widespread habitat loss from wetland drainage and agricultural conversion across its breeding and wintering grounds. Climate change is altering precipitation patterns and temperature regimes, disrupting the timing of migration and breeding cycles while degrading critical wetland ecosystems. Hunting pressure and disturbance at key staging areas further compound these threats, pushing populations toward critical levels.

wiipë

VU

Garcinia madruno

Pop: Not assessed|Trend:

wild celery

CR

Apium graveolens

Pop: Not assessed|Trend:

Wild celery faces severe threats from habitat destruction as coastal wetlands and salt marshes are drained for agriculture and urban development. Climate change and sea level rise further threaten these specialized habitats, while invasive species compete for resources in remaining suitable areas.

Wild Celery

CR

Vallisneria americana

Pop: Not assessed|Trend:

Wild Celery faces severe threats from habitat degradation due to water pollution, eutrophication, and sedimentation in freshwater systems. Invasive species competition, dam construction altering water flow patterns, and climate change impacts on water temperature and chemistry have contributed to significant population declines across its range.

Wild Lettuce

EN

Lactuca quercina

Pop: Not assessed|Trend:

Wild Prickly Rose

VU

Rosa acicularis

Pop: Not assessed|Trend:

Wild Pumpkin

CR

Cionosicys pomiformis

Pop: Not assessed|Trend:

Wild Pumpkin faces severe threats from habitat destruction due to agricultural expansion and urban development across its limited range. The species' restricted distribution makes it particularly vulnerable to localized threats, while climate change poses additional risks to its specialized habitat requirements.

wild Star sea pen

VU

Kophobelemnon stelliferum

Pop: Not assessed|Trend:

Wild Tomato (Trinidad & Tobago)

VU

Ambrosia cumanensis

Pop: Not assessed|Trend:

Wildcat

CR

Felis silvestris

Pop: Not assessed|Trend:

The Wildcat faces severe threats from hybridization with domestic cats, which dilutes the genetic integrity of pure wildcat populations and represents one of the most significant conservation challenges for the species. Habitat fragmentation and loss due to agricultural expansion, urbanization, and infrastructure development have severely reduced suitable territory and isolated remaining populations. Conservation status may vary by region or assessment authority, but persecution by humans and competition with feral domestic cats continue to drive population declines.

Wildschwein

CR

Sus scrofa

Pop: Not assessed|Trend:

Wild boar populations face severe pressure from habitat fragmentation and conversion of forests and woodlands to agricultural land and urban development. Intensive hunting pressure, disease transmission from domestic pigs, and human-wildlife conflict in agricultural areas have contributed to population declines in certain regions, though conservation status may vary by region or assessment authority.

wilgedansvlieg

EN

Empis borealis

Pop: Not assessed|Trend:

Willow Bonnet

VU

Mycenella salicina

Pop: Not assessed|Trend:

Willow Moss

VU

Fontinalis antipyretica

Pop: Not assessed|Trend:

Willow Warbler

VU

Phylloscopus trochilus

Pop: Not assessed|Trend:

Wilson's Filmy Fern

CR

Hymenophyllum wilsonii

Pop: Not assessed|Trend:

Wilson's Filmy Fern faces severe threats from habitat destruction and degradation of its specialized oceanic environments. The species' extremely limited distribution and dependence on specific humid microclimates make it highly vulnerable to environmental changes and human disturbance. Climate change poses additional risks by altering the precise moisture and temperature conditions this delicate fern requires for survival.

Wimpergeleitandzwam

VU

Stypella subgelatinosa

Pop: Not assessed|Trend:

Winecork Brittlegill

CR

Russula adusta

Pop: Not assessed|Trend:

The Winecork Brittlegill faces severe threats from widespread habitat degradation and loss of mature forest ecosystems essential for its mycorrhizal relationships. Climate change and atmospheric pollution are disrupting the delicate soil chemistry and fungal networks this species depends on for survival. Conservation status may vary by region or assessment authority, but declining populations reflect the broader crisis facing forest-dependent fungi.

winter cattleya

CR

Cattleya trianae

Pop: Not assessed|Trend:

The winter cattleya faces severe threats from habitat destruction due to deforestation and agricultural expansion in Colombia's cloud forest ecosystems. Over-collection for the international orchid trade has significantly depleted wild populations, while climate change threatens the specific temperature and humidity conditions this species requires in its montane habitat.

Wiry Ground-cedar

EN

Diphasiastrum tristachyum

Pop: Not assessed|Trend:

Witches Cauldron

EN

Sarcosoma globosum

Pop: Not assessed|Trend:

Witches' Whiskers Lichen

VU

Usnea florida

Pop: Not assessed|Trend:

Witgele grasmineermot

EN

Elachista anserinella

Pop: Not assessed|Trend:

Witkring

CR

Sporodophoron cretaceum

Pop: Not assessed|Trend:

Sporodophoron cretaceum faces severe population declines due to widespread habitat destruction from agricultural expansion and urban development across its limited range. The species' specialized ecological requirements and small, fragmented populations make it extremely vulnerable to environmental changes and stochastic events.

witrugbodemkrabspin

EN

Ozyptila brevipes

Pop: Not assessed|Trend:

witvlekpyamaspin

VU

Hypsosinga albovittata

Pop: Not assessed|Trend:

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