Arctic climate change affects falcon breeding patterns

A study published in the journal Global Change Biology indicates that climate change is influencing the breeding timing and presence of peregrine falcons and gyrfalcons across the Arctic. Because warming is occurring more rapidly in the Arctic than in other parts of the world, these avian species are experiencing shifts in their biological cycles.

The research, which involved long-term monitoring across multiple regions including Iceland, found that peregrine falcons—which are migratory—show less flexibility in adjusting their breeding schedules compared to the resident gyrfalcons. While some areas saw chicks hatching earlier due to earlier snowmelt, warmer summers unexpectedly led to lower survival rates for chicks in some locations, a trend more pronounced in peregrine falcons.

Researchers suggest that further investigation is needed to determine if chicks are becoming more vulnerable to overheating in their nests due to rising temperatures.