OUR BACKYARD CHICKADEES are common, everyday birds that fill me with wonder.
It goes almost without saying that chickadees are cute and endearing, and it’s fair to call them friendly, too, and not just toward people with feeders. Northern warblers learn Black-capped Chickadee vocalizations long before they head south, distinguishing their mobbing calls near owls and sedentary predators (the notes increasing as the threat level rises) from their high-intensity alarm call (a high-pitched ) given the
