What is the season where you are?How do you know?

Take a look outside a window.What is the season where you are?How do you know?Most likely, you looked at a tree or plant and noticed details about its leaves and assessed the qualities of sunlight streaming outside.Observing the timing of biological events in relation to changes in season and climate is called phenology. When you notice the daffodil buds are poking through the snow and think spring is on its way,you're using phenology.When you see leaves turn from green to red,and watch migrating birds fly past,and realize that summer is over, autumn is here,you're using phenology.