The Influence of Migration Timing and Local Conditions on Reproductive Timing in Arctic-Breeding Birds.

ABSTRACT: For birds breeding in the Arctic, nest success is affected by the timing of nest initiation, which is partially determined by local conditions such as snow cover. However, conditions during the non-breeding season can carry over to affect the timing of breeding. We used tracking and breeding data from 248 individuals of 8 species and subspecies of Arctic-breeding shorebirds to estimate how the timing of nest initiation is related to local conditions like snowmelt phenology versus prior conditions, measured by the timing and speed of migration. Using path analysis, our global model showed that local and prior conditions have similar effect sizes (Standardised Path Coefficients ± SE of 0.44 ± 0.07 and 0.43 ± 0.07 for snowmelt and arrival timing, respectively), suggesting that both influence

SUBMITTER: English WB 

PROVIDER: S-EPMC11750415 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature