The study of birds is calledornithology. It includes study abouttheir spindle-shaped body,well-developed flight muscles,physical appearance, habitats, alongwith their migration patterns and lotmore. 'Ichthyology' is the branch of zoologydevoted to the study of fishes. 'Gerontology' is the study of thephysical aspects of ageing, as well asthe mental, social and societalimplications of ageing. 'Pomology' is a branch of botany thatstudies fruit and its cultivation.