How do you know when spring has begun? Is it the flow of maple sap? The first crocuses coming up through the snow? Ice out on local lakes? The arrival of the first red-winged blackbirds? The clamor of peepers? Apple trees and/or lilacs blooming?
Meriam-Webster defines phenology, which is derived from the Greek word ‘phaino’ meaning to show or appear, as ‘a branch of science dealing with the relations between climate and periodic biological phenomena.’ Think of it as a timeline or chronology of periodic natural events; such as when insects hatch or arrive; when flowers and plants emerge, bloom, and produce seed; when migrating birds and insects (e.g. monarch butterflies) arrive, mate or nest, and depart; and how all of these function within ecosystems and respond to change. » Continue Reading.