Species of Greatest Conservation Need By Taxon
Bird
| Scientific Name | Common Name | RSGCN Concern Level |
|---|---|---|
| Puffinus puffinus | Manx Shearwater | |
| Quiscalus major | Boat-tailed Grackle | |
| Rallus elegans | King Rail | |
| Rallus limicola | Virginia Rail | |
| Rallus longirostris | Clapper Rail | |
| Recurvirostra americana | American Avocet | |
| Regulus calendula | Ruby-crowned Kinglet | |
| Regulus satrapa | Golden-crowned Kinglet | |
| Riparia riparia | Bank Swallow | |
| Rissa tridactyla | Black-legged Kittiwake | |
| Rynchops niger | Black Skimmer | |
| Scolopax minor | American Woodcock | Moderate |
| Seiurus aurocapilla | Ovenbird | |
| Setophaga americana | Northern Parula | |
| Setophaga caerulescens | Black-throated Blue Warbler | |
| Setophaga castanea | Bay-breasted Warbler | |
| Setophaga cerulea | Cerulean Warbler | High |
| Setophaga citrina | Hooded Warbler | |
| Setophaga coronata | Yellow-rumped Warbler | |
| Setophaga discolor | Prairie Warbler | Moderate |
| Setophaga dominica | Yellow-throated Warbler | |
| Setophaga fusca | Blackburnian Warbler | |
| Setophaga magnolia | Magnolia Warbler | |
| Setophaga pensylvanica | Chestnut-sided Warbler | |
| Setophaga petechia | Yellow Warbler | |
| Setophaga ruticilla | American Redstart | |
| Setophaga striata | Blackpoll Warbler | High |
| Setophaga tigrina | Cape May Warbler | |
| Setophaga virens | Black-throated Green Warbler | |
| Setophaga virens waynei | Wayne's Black-throated Green Warbler | |
| Sialia sialis | Eastern Bluebird | |
| Sitta canadensis | Red-breasted Nuthatch | |
| Sitta pusilla | Brown-headed Nuthatch | |
| Somateria mollissima dresseri | American Common Eider | |
| Sphyrapicus varius | Yellow-bellied Sapsucker | |
| Spinus pinus | Pine Siskin | |
| Spiza americana | Dickcissel | |
| Spizella arborea | American Tree Sparrow | |
| Spizella pallida | Clay-colored Sparrow | |
| Spizella pusilla | Field Sparrow | |
| Stelgidopteryx serripennis | Northern Rough-winged Swallow | |
| Stercorarius longicaudus | Long-tailed Jaeger | |
| Sterna dougallii | Roseate Tern | Very High |
| Sterna forsteri | Forster's Tern | High |
| Sterna hirundo | Common Tern | Moderate |
| Sterna paradisaea | Arctic Tern | |
| Sternula antillarum | Least Tern | High |
| Strix varia | Barred Owl | |
| Sturnella magna | Eastern Meadowlark | Moderate |
| Tachycineta bicolor | Tree Swallow |