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Total species in the US - 76560
Total threatened species in the US - 8451
Percentage of species threatened in the US - 11.04%
Number of threatened bird species - 486
Number of threatened amphibians species - 276
Number of threatened reptiles bird species - 325
Number of threatened mammals species - 166
Number of threatened fish species - 379
Number of threatened mollusk species - 531
Number of threatened arachnid species - 21
Number of threatened insect species - 930
Number of threatened plant species - 4930
Number of threatened fungus & lichen species - 189
Total species in the US - 76560
Total introduced species in the US - 5631
Percentage of introduced species in the US -Â 7.36%
Number of introduced bird species - 233
Most observed introduced bird - House Sparrow, Passer domesticus
Number of introduced amphibian species - 34
Most observed introduced amphibian - Cuban Tree Frog, Osteopilus septentrionalis
Number of introduced reptile species - 132
Most observed introduced reptile - Brown Anole, Anolis sagrei
Number of introduced mammal species - 63
Most observed introduced mammal - Fox Squirrel, Sciurus niger
Number of introduced fish species - 199
Most observed introduced fish - Bluegill, Lepomis macrochirus
Number of introduced mollusk species - 127
Most observed introduced mollusk - Garden Snail, Cornu aspersum
Number of introduced arachnid species - 106
Most observed introduced arachnid - Cross Orbweaver, Araneus diadematus
Number of introduced insect species - 1043
Most observed introduced insect - Western Honey Bee, Apis mellifera
Number of introduced plant species - 3516
Most observed introduced plant - White Clover, Trifolium repens
Number of introduced fungus & lichen species - 15
Most observed introduced fungus & lichen - Golden Oyster Mushroom, Pleurotus citrinopileatus
Map of the percentages of introduced species per state
Map of the percentages of threatened species per state
Introduced and Threatened Species by State.pdfTop 25 most commonly observed species in the US (reported on iNaturalist)
Mallard, Anas platyrhynchos - Native to the US (but may be considered introduced in some states)
Monarch, Danaus plexippus - Native to the US (but may be considered introduced in some states)
Western Honey Bee, Apis mellifera - Introduced to the US
Great Blue Heron, Ardea herodias - Native to the US (but may be considered introduced in some states)
American Robin, Turdus migratorius - Native to the US (but may be considered introduced in some states)
Canada Goose, Branta canadensis - Native to the US (but may be considered introduced in some states)
White-tailed Deer, Odocoileus virginianus - Native to the US (but may be considered introduced in some states)
Red-tailed Hawk, Buteo jamaicensis - Native to the US (but may be considered introduced in some states)
Northern Cardinal, Cardinalis cardinalis - Native to the US (but may be considered introduced in some states)
Eastern Gray Squirrel, Sciurus carolinensis - Native to the US (but may be considered introduced in some states)
Asian Lady Beetle, Harmonia axyridis - Introduced to the US
Common Eastern Bumble Bee, Bombus impatiens - Native to the US (but may be considered introduced in some states)
House Finch, Haemorhous mexicanus - Native to the US (but may be considered introduced in some states)
Mourning Dove, Zenaida macroura - Native to the US (but may be considered introduced in some states)
Great Egret, Ardea alba - Native to the US (but may be considered introduced in some states)
Western Fence Lizard, Sceloporus occidentalis - Native to the US (but may be considered introduced in some states)
Northern Mockingbird, Mimus polyglottos - Native to the US (but may be considered introduced in some states)
Red-winged Blackbird, Agelaius phoeniceus - Native to the US (but may be considered introduced in some states)
House Sparrow, Passer domesticus - Introduced to the US
Song Sparrow, Melospiza melodia - Native to the US (but may be considered introduced in some states)
Pond Slider, Trachemys scripta - Native to the US (but may be considered introduced in some states)
Yellow-rumped Warbler, Setophaga coronata - Native to the US (but may be considered introduced in some states)
Turkey Vulture, Cathartes aura - Native to the US (but may be considered introduced in some states)
Dark-eyed Junco, Junco hyemalis - Native to the US (but may be considered introduced in some states)
American Pokeweed, Phytolacca americana - Native to the US (but may be considered introduced in some states)
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