Taxonomic List of On-Alert and Tipping Point Species

two Pinyon Jays perch in a juniper tree
Pinyon Jay by Michael Henry.

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*


Clark’s Grebe
Western Grebe


Black-billed Cuckoo

Nightjars and Allies

Eastern Whip-poor-will


Black Swift
Chimney Swift


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

Bristle-thighed Curlew*
Hudsonian Godwit
Ruddy Turnstone
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


Yellow-billed Loon


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

Red-faced Cormorant


Snowy Owl


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

Sprague’s Pipit

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

Tricolored Blackbird*

New World Warblers

Golden-winged Warbler
Mourning Warbler
Cerulean Warbler
Prairie Warbler
Grace’s Warbler
Canada Warbler