What do these ranks mean? ORBIC's ranking definitions

Clouded Salamander

Clouded Salamander

Aneides ferreus

List 4S3S4
Oregon Slender Salamander

Oregon Slender Salamander

Batrachoseps wrighti

List 4S3
Larch Mountain Salamander

Larch Mountain Salamander

Plethodon larselli

List 2S2?

Crater Lake Newt

Taricha granulosa mazamae

List 1S1
Cope's Giant Salamander

Cope's Giant Salamander

Dicamptodon copei

List 2S2?
Southern Torrent Salamander

Southern Torrent Salamander

Rhyacotriton variegatus

List 4S3?
Cascade Torrent Salamander

Cascade Torrent Salamander

Rhyacotriton cascadae

List 2S2S3
Coastal Tailed Frog

Coastal Tailed Frog

Ascaphus truei

List 4S3
Johnson's Hairstreak

Johnson's Hairstreak

Callophrys johnsoni

List 2S2S3
Northern Red-Legged Frog

Northern Red-Legged Frog

Rana aurora

List 4S3S4
Foothill Yellow-Legged Frog

Foothill Yellow-Legged Frog

Rana boylii

List 2S2S3
Cascades Frog

Cascades Frog

Rana cascadae

List 4S3
Winged Floater

Winged Floater

Anodonta nuttalliana

List 3S2?
Oregon Floater

Oregon Floater

Anodonta oregonensis

List 2S3?

Horned Grebe

Podiceps auritus

List 2S2B,S5N

Red-Necked Grebe

Podiceps grisegena

List 2S1B,S4N
Western Ridged Mussel

Western Ridged Mussel

Gonidea angulata

List 1S2S3
Western Pearlshell

Western Pearlshell

Margaritifera falcata

List 2S3
Least Bittern

Least Bittern

Botaurus exilis

List 3S1B

Shortface Lanx

Fisherola nuttalli

List 1S1S2

Banded Juga

Juga newberryi

List 1S1
Barrow's Goldeneye

Barrow's Goldeneye

Bucephala islandica

List 4S3B,S3N
Bufflehead

Bufflehead

Bucephala albeola

List 2S2B,S5N
California Condor

California Condor

Gymnogyps californianus

List 1-exSX
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