To the Editor:

Re “The Solace of Birds in Winter” (Op-Ed, Dec. 15): I am smitten with my backyard birds. What is it about the industrious little souls leaping delicately about my tray feeder that so lifts the spirit? Their spunk? Their equanimity no matter the weather? The variety in their eating habits?

Mourning doves plunk themselves down in the center of the tray to chow down. The red-bellied woodpecker grips the edge and won’t yield his position. The chickadees and nuthatches take a seed each, one at a time, to a nearby branch to nibble.

A chickadee weighs less than half an ounce. Its coat of feathers, half an inch thick, keeps its tiny body at about 90 degrees even when the air temperature is zero. It is this, then, that takes my breath away and is the source of my affection — the miraculous, every day in winter, not 15…