Catching spring in the act

Catching spring in the act

The mourning cloak butterfly, a common harbinger of spring • Photo by Benny Mazur (CC BY 2.0)

Originally published 27 April 1992

I have that haunt­ing feel­ing that spring this year again per­formed all her old tricks and showed me just how life is made and what it is made of, but her hand has such sleight and she so dis­tracts the atten­tion with wav­ing green scarves and birds let loose from the loft that just when you think it is time now to watch care­ful­ly, the thing is done.”

So writes Don­ald Cul­ross Peat­tie in Green Lau­rels: The Lives and Achieve­ments of the Great Nat­u­ral­ists. He might have been talk­ing about the New Eng­land spring, which most­ly isn’t, until one day it was and you won­der how you missed it.

This year as every year we were treat­ed to the usu­al antic­i­pa­to­ry diver­sions per­formed by the magi­cian to tease us into atten­tion. Red­wing black­birds arrived in our mead­ow on the 27th of Feb­ru­ary. Spring peep­ers began their cho­rus dur­ing the last week of March. The song of the mead­owlark was heard here­abouts in ear­ly April. We slip to the edges of our seats, wait­ing to catch the magi­cian at her trick, and then — presto! — the thing is done, fin­ished, over, the rab­bit is out of the hat and we have some­how been mag­i­cal­ly trans­port­ed from win­ter to summer.

In his med­i­ta­tion about spring, Peat­tie was writ­ing about Jean-Hen­ri Fab­re, the French ento­mol­o­gist who devot­ed his life to the study of insects and their near rela­tions. Fab­re spent much of his time lay­ing in ditch­es or crouched in the grass peer­ing in on the pri­vate lives of spi­ders, cater­pil­lars, bee­tles, and ants. Of the great nat­u­ral­ists chron­i­cled by Peat­tie, Fab­re spent his life clos­est to the ground.

For­get the robins, cho­rus­ing frogs, skunk cab­bages, and pussy wil­lows. Insects make up more than half of all of liv­ing things on the plan­et. In North Amer­i­ca there are 100 times more species of insects than birds, three times more species of insects than all the plants put togeth­er. How can spring hap­pen and that mul­ti­tude of six-legged crea­tures remain invisible?

Of all spring insects, only the mourn­ing cloak but­ter­flies are con­spic­u­ous. They flag them­selves before our eyes like bright hand­ker­chiefs plucked from the magi­cian’s sleeve. Some years we’ve seen mourn­ing cloaks as ear­ly as Feb­ru­ary or March, roused from hiber­na­tion by a freak day of soar­ing tem­per­a­tures. This year it was­n’t until the glo­ri­ous (but fleet­ing) after­noon warmth of April 3rd that we saw the first of these win­ter snoozers.

Mourn­ing cloaks, almost unique­ly among but­ter­flies, win­ter over as adults, sleep­ing in for­est nooks or cran­nies. In all my years of pok­ing and pry­ing in win­ter woods I’ve nev­er come upon a hiber­nat­ing mourn­ing cloak, but they must be there because the first spring day with tem­per­a­tures in the high 50s brings them flap­ping into the sun. What gor­geous spring­like things they are, with three-inch wingspans of pur­ple-brown fringed with sum­mer’s gold.

Water strid­ers and whirligig bee­tles also over­win­ter as adults, which means they are out and about in spring. There’s a plank bridge not far from here, across a slug­gish stream, where it is pleas­ant to lay on one’s bel­ly dur­ing a warm spring after­noon and watch the stream come to life. The momen­tum of the stream’s sur­face builds day by day, from icy inac­tiv­i­ty to total fren­zy, with slow, observ­able steps. There is no illu­sion­ist leap here from win­ter to sum­mer; the sur­face of the stream is one place where nature’s hand is not quick­er than the eye.

Spit­tle bugs, leaf bee­tles, tent cater­pil­lars, soli­tary bees: These too are out ear­ly to catch the first saps and nec­tars of the sea­son. Their increase is slow and steady, unlike the sud­den jolt of the ther­mome­ter from the 30s to the 70s that deludes us into think­ing spring did­n’t hap­pen. Insects give voice to the tick-tock of the sea­son. One thing fol­lows anoth­er. No mourn­ing cloak but­ter­flies until sap is flow­ing at bro­ken twigs. No spi­der webs until there are winged insects to snare. No cater­pil­lars until there are young leaves to feed on. No nestlings in the robin’s nest until the first big hatch of insect grubs.

Jean-Hen­ri Fab­re lived for spring. He had no oth­er ambi­tion than to chron­i­cle the lives of insects, and win­ter sent most of his beloved crea­tures to their nests, bur­rows and egg cas­es. For much of his life Fab­re worked as a school­mas­ter or pro­fes­sor, for a mea­ger salary that suf­fered no increase in 20 years. When his pop­u­lar writ­ing at last began to pro­duce a small income, he bought a scrag­gly plot of land suit­able only for spi­ders, scor­pi­ons, this­tles and him­self. There he hun­kered down among the weeds and watched insects in their ele­ment. At the end of a long life of impov­er­ished ento­mol­o­gy he was lift­ed from obscu­ri­ty and hailed as the “Homer of Insects.”

Fab­re wel­comed spring for the signs and sig­nals we sel­dom notice — the hum, flit­ter and skit­ter of ten thou­sand tiny crea­tures wind­ing up into activ­i­ty, teach­ing us again how life is made and what it is made of. That hum, flit­ter and skit­ter is spring’s sleight of hand caught in the act.

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