Physiological changes have observable impacts on morphology, such as changes in body size , and colour changes in butterflies, dragonflies and birds  . However, trends are not always linear or consistent across realms, taxonomic groups or geographic regions . Some morphological changes arise in response to environmental changes, rather than as the result of genetic adaptation or selection for an optimal body type. For example, dietary changes associated with climate change have led to changes in chipmunk skull morphology .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report