The increasing frequency and intensity of heat waves recorded in recent decades presents a second threat . Nests were historically built in insulated guano burrows, but are now frequently sited on open ground . High temperatures frequently expose the birds to severe heat stress, causing adults to abandon their nests and resulting in the mortality of eggs and chicks . Intensifying storm surges and greater wave heights can cause nest flooding .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report