Idiosyncratic changes in spring arrival dates of Pacific Northwest migratory birds.

ABSTRACT: Shifts in the timing of bird migration have been associated with climatic change and species traits. However, climatic change does not affect all species or geographic locations equally. Climate in the Pacific Northwest has shifted during the last century with mean temperatures increasing by 1 °C but little change in total annual precipitation. Few long-term data on migration phenology of birds are available in the Pacific Northwest. We analyzed trends in spring arrival dates from a site in the Oregon Coast Range where nearly daily inventories of birds were conducted in 24 of 29 years. Several species showed statistically significant shifts in timing of first spring arrivals. Six of 18 species occur significantly earlier now than during the initial phase of the study. One species arrives s

SUBMITTER: Robinson WD 

PROVIDER: S-EPMC6842555 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature