Neither the rate of consistency with climate change nor the phenological shift differ significantly from null expectations . Many seabirds are breeding earlier , while breeding among others in temperate and polar regions has been delayed, which has been linked to later sea ice breakup or limited prey resources . Although the response of lifecycle events for many seabird species is variable in direction, there has usually been a more complex driver associated with climate that has been considered to be responsible . For many species, seasonal timing is moving earlier, especially in the Arctic , but for many species in the Southern Ocean, it is not . This could be because of a much slower rate of warming in most of the Southern Ocean than in the Arctic.
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report