This page allows you to extract trend results by region for intervals 1966-2022 and 1993-2022. Starting in 2017, BBS results have been presented for a "Core" survey area (strata in which at least some routes have data extending from 1968 to present), and for an "Expanded" survey area that contains the Core strata as well as several non-Core strata in Alaska and northern Canada that were not consistently surveyed prior to 1993. Of the 548 species for which we estimate trends, 426 of them occur in the Core Region (Core Species), and for those species we present trends both for core strata and for Expanded area strata. For Core Species, results for both 1966-2022 and 1993-2022 are presented for Core portions of US, Canada, and Survey-wide for these species. Regions that are labeled as "Expanded" are based on all strata (Core and non-Core) and results for those regions are only computed for 1993-2022. The remaining 122 species (i.e., Non-core Species) only (or primarily) occur in the Expanded survey area, and for these species we only present results for expanded regions over the interval 1993-2022.
--> Select a region from the list below to display a table of trend estimates for all species: ===== select region === Alabama Arizona Arkansas British Columbia California Colorado Connecticut Delaware Florida Georgia Idaho Illinois Indiana Iowa Kansas Kentucky Louisiana Maine Manitoba Maryland Massachusetts Michigan Minnesota Mississippi Missouri Montana Nebraska Nevada New Brunswick New Hampshire New Jersey New Mexico New York North Carolina North Dakota Northwest Territories (Expanded) Nova Scotia Ohio Oklahoma Ontario Oregon Pennsylvania Prince Edward Island Quebec Rhode Island Saskatchewan South Carolina South Dakota Tennessee Texas Utah Vermont Virginia Washington West Virginia Wisconsin Wyoming Yukon (Expanded) --------------------- Northwestern Interior Forest (Core) Northern Pacific Rainforest (Core) Boreal Taiga Plains (Core) Western Alaska Arctic Plains and Mountains (Expanded) Northwestern Interior Forest (Expanded) Northern Pacific Rainforest (Expanded) Boreal Taiga Plains (Expanded) Taiga Shield and Hudson Plains Boreal Softwood Shield Great Basin Northern Rockies Prairie Potholes Boreal Hardwood Transition Lower Great Lakes/ St. Lawrence Plain Atlantic Northern Forest Sierra Nevada Southern Rockies/colorado Plateau Badlands and Prairies Shortgrass Prairie Central Mixed Grass Prairie Edwards Plateau Oaks and Prairies Eastern Tallgrass Prairie Prairie Hardwood Transition Central Hardwoods West Gulf Coastal Plain/ouachitas Mississippi Alluvial Valley Southeastern Coastal Plain Appalachian Mountains Piedmont New England/mid-atlantic Coast Peninsular Florida Coastal California Sonoran and Mojave Deserts Sierra Madre Occidental Chihuahuan Desert Tamaulipan Brushlands Gulf Coastal Prairie Eastern BBS Region Central BBS Region Western BBS Region United States (Core) Canada (Core) Survey-wide (Core) United States (Expanded) Canada (Expanded) Survey-wide (Expanded)
Regional summary results presented here have been extracted from peer-reviewed analyses of BBS data. Spreadsheets containing results of these analyses for all species and regions are published on the USGS Sciencebase archive, at:
