Cerulean Warbler indices of abundance, 1966-2023

Detailed Description
Indices of abundance for Cerulean Warbler (Setophaga cerulea), range-wide, derived from USGS Breeding Bird Survey data collected between 1966 and 2023. The solid blue line indicates the estimate of relative abundance for each year and the lighter blue area represents the 95% credible intervals.
Sources/Usage
Public Domain.
Chart produced by USGS. Photo credit: "Cerulean Warbler (Dendroica cerulea). Rondeau Provincial Park, Ontario, Canada." by Mdf is licensed under GNU Free Documentation License: https://commons.wikimedia.org/wiki/File:Dendroica-cerulea-002.jpg