Animals are also creatures of habit. A flock of quail will usually be found doing the same thing in the same area at the same time each day. Plants also show activity periodicity. Obviously they photosynthesize in daylight, but usually with a distinct peak in the morning. Plants Annual plants have growing seasons and exist only as seeds at other times of the year.
Deciduous plants are dormant during the cold season or the dry season depending on climate.
Flowers and fruits are found only certain times of the year. Many insects overwinter as eggs, but some rest in other stages such as pupae. Most ground squirrels and chipmunks drop their body temperature to near ambient. Most mammals and birds time their reproduction so the young are born or hatched in spring so that the easy time of the year is available for growth and development. Others produce quick-germinating seeds only in spring from energy stored in tissues of the parent.