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These species include those classified as
Critical, Endangered, Vulnerable, and Near-threatened
on the IUCN RedList, See definitions of IUCN Criteria

Download List and Thresholds (pdf)

Emperor Goose Hawaiian Goose Hawaiian Duck Laysan Duck Steller's Eider* Greater Sage Grouse Gunnison Sage-Grouse Greater Prairie-Chicken Lesser Prairie-Chicken Northern Bobwhite Yellow-billed Loon* Laysan Albatross Black-footed Albatross Short-tailed Albatross* Bermuda Petrel Black-capped Petrel Hawaiian Petrel Cook's Petrel* Pink-footed Shearwater Buller's Shearwater Sooty Shearwater "Newell's Shearwater" Black-vented Shearwater Ashy Storm-Petrel Tristram's Storm-Petrel Reddish Egret* California Condor Hawaiian Hawk Black Rail Hawaiian Coot Whooping Crane Piping Plover Mountain Plover	Bristle-thighed Curlew Buff-breasted Sandpiper Heermann's Gull Red-legged Kittiwake Ivory Gull* Elegant Tern Marbled Murrelet Kittlitz's Murrelet Xantus's Murrelet Craveri's Murrelet White-crowned Pigeon Thick-billed Parrot Red-crowned Parrot Spotted Owl Chimney Swift* Red-headed Woodpecker Red-cockaded Woodpecker Ivory-billed Woodpecker Olive-sided Flycatcher Bell's Vireo Black-capped Vireo Florida Scrub-Jay Island Scrub-Jay Pinyon Jay Elepaio Millerbird Omao Puaiohi Bicknell's Thrush Bendire's Thrasher Sprague's Pipit	Golden-winged Warbler Colima Warbler Golden-cheeked Warbler Kirtland's Warbler Cerulean Warbler Bachman's Sparrow Henslow's Sparrow Saltmarsh Sparrow Chestnut-collared Longspur McKay's Bunting Painted Bunting Tricolored Blackbird* Rusty Blackbird* Cassin's Finch Laysan Finch Nihoa Finch Palila Maui Parrotbill O'ahu Amakihi Kaua'i Amakihi Anianiau Akiapolaau Akikiki Hawai'i Creeper Maui 'Alauahio Akekee Akepa Iiwi Akohekohe Poouli
* Species added to this list since list originally posted in 2006.
Additional Notes: The following species are no longer species of global conservation concern: Ferruginous Hawk, Long-billed Curlew, Brewer's Sparrow The following species have been listed as A1 species for the U.S. but are unlikely triggers for U.S. IBAs: Mottled Petrel, Black-tailed Godwit, Bahama Swallow, Eared Quetzal, Far Eastern Curlew, Juan Fernandez Petrel, Providence Petrel, Pycroft's Petrel, Steineger's Petrel, White-necked Petrel, Worthen's Sparrow, Guam Swiftlet The following species are likely extinct and have been removed from the list: Eskimo Curlew, Kama'o, Oloma'o, Bachman's Warbler, O'u, Nukupu'u, O'ahu 'Alauahio Hawaiian Crow is extinct in the wild.   Updated October 2010

Back to A1 criteria