Taxonomic List of On-Alert and Tipping Point Species
These 90 species have all lost 50% of their populations from 1970–2019 and are considered “On Alert.” Of these, 70 are Tipping Point species (highlighted); they are on a trajectory to lose another 50% of their populations in the next 50 years (39 species), or already have perilously small populations and continue to face high threats, but lack sufficient monitoring data (31 species, indicated with an asterisk). Tap or click the links to view Birds of the World species accounts for all Tipping Point species.
View the list in alphabetic order.
Ducks, Geese, and Waterfowl
Black Scoter
King Eider
Mottled Duck
Pheasants, Grouse, and Allies
Greater Sage-Grouse
Lesser Prairie-Chicken*
Grebes
Clark’s Grebe
Western Grebe
Cuckoos
Black-billed Cuckoo
Nightjars and Allies
Eastern Whip-poor-will
Swifts
Black Swift
Chimney Swift
Hummingbirds
Rufous Hummingbird
Allen’s Hummingbird
Rails, Gallinules, and Coots
King Rail
Black Rail*
Yellow Rail*
Plovers and Lapwings
American Golden-Plover
Mountain Plover
Wilson’s Plover
Sandpipers and Allies
Whimbrel
Bristle-thighed Curlew*
Hudsonian Godwit
Ruddy Turnstone
Surfbird
Stilt Sandpiper
Rock Sandpiper
Buff-breasted Sandpiper
Pectoral Sandpiper
Semipalmated Sandpiper
Short-billed Dowitcher
Long-billed Dowitcher
Wandering Tattler
Lesser Yellowlegs
Auks, Murres, and Puffins
Craveri’s Murrelet*
Guadalupe Murrelet*
Kittlitz’s Murrelet*
Scripps’s Murrelet*
Whiskered Auklet*
Gulls, Terns, and Skimmers
Red-legged Kittiwake*
Ivory Gull*
Heermann’s Gull*
Great Black-backed Gull
Least Tern
Elegant Tern*
Black Skimmer
Loons
Albatrosses
Laysan Albatross*
Black-footed Albatross*
Northern Storm-Petrels
Townsend’s Storm-Petrel*
Ashy Storm-Petrel*
Band-rumped Storm-Petrel*
Shearwaters and Petrels
Murphy’s Petrel*
Fea’s Petrel*
Black-capped Petrel*
Parkinson’s Petrel*
Black-vented Shearwater*
Audubon’s Shearwater*
Cormorants and Shags
Owls
Snowy Owl
Woodpeckers
Red-headed Woodpecker
Tyrant Flycatchers
Olive-sided Flycatcher
Crows, Jays, and Magpies
Pinyon Jay
Yellow-billed Magpie
Mockingbirds and Thrashers
Bendire’s Thrasher
LeConte’s Thrasher
Thrushes and Allies
Bicknell’s Thrush*
Wood Thrush
Wagtails and Pipits
Finches, Euphonias, and Allies
Evening Grosbeak
Black Rosy-Finch*
Brown-capped Rosy-Finch*
Cassia Crossbill*
Longspurs and Snow Buntings
Chestnut-collared Longspur
Thick-billed Longspur
New World Sparrows
Bachman’s Sparrow
Black-chinned Sparrow
Harris’s Sparrow
Seaside Sparrow*
LeConte’s Sparrow
Saltmarsh Sparrow*
Baird’s Sparrow
Henslow’s Sparrow
Troupials and Allies
New World Warblers
Golden-winged Warbler
Mourning Warbler
Cerulean Warbler
Prairie Warbler
Grace’s Warbler
Canada Warbler