Demographic responses to climate-driven variation in habitat quality across the annual cycle of a migratory bird species.

ABSTRACT: The demography and dynamics of migratory bird populations depend on patterns of movement and habitat quality across the annual cycle. We leveraged archival GPS-tagging data, climate data, remote-sensed vegetation data, and bird-banding data to better understand the dynamics of black-headed grosbeak (Pheucticus melanocephalus) populations in two breeding regions, the coast and Central Valley of California (Coastal California) and the Sierra Nevada mountain range (Sierra Nevada), over 28 years (1992-2019). Drought conditions across the annual cycle and rainfall timing on the molting grounds influenced seasonal habitat characteristics, including vegetation greenness and phenology (maturity dates). We developed a novel integrated population model with population state informed by adult

SUBMITTER: Saracco JF 

PROVIDER: S-EPMC9188024 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature