The Cornell Lab logo Працює за допомогою eBird

Trends 2007-2021

Гніздовий сезон, 14 чер - 20 лип

This map depicts the cumulative change in estimated relative abundance from 2007 through 2021 with circles representing 27km x 27km regions. Red indicates decline and blue indicates increase. The darker the color, the stronger the trend. White circles represent locations where the trend estimate is not significantly different from zero (i.e., the 80% confidence interval contains zero). Circle sizes are scaled by the estimated relative abundance at the middle of the time period.

Дізнатися більше


Inside modeled seasonal range
Outside modeled seasonal range

Дані eBird від 2007-2021. Розраховано на 2021.

Fink, D., T. Auer, A. Johnston, M. Strimas-Mackey, S. Ligocki, O. Robinson, W. Hochachka, L. Jaromczyk, A. Rodewald, C. Wood, I. Davies, A. Spencer. 2022. eBird Status and Trends, Data Version: 2021; Released: 2022. Cornell Lab of Ornithology, Ithaca, New York.