High from the earth I heard a bird
trod upon the trees
Not literally walking on branches—the bird is so high up it looks down on treetops like we'd look down on grass. Dickinson inverts the usual perspective.
pile of wind
A thermal updraft or air current. Birds ride these invisible columns of warm air to save energy—what looks effortless requires finding the right physics.
benediction / And badinage
His song mixes blessing (benediction) with playful teasing (badinage). The bird's call serves multiple purposes at once—serious and light simultaneously.
faithful father
Male songbirds sing to defend territory and attract mates during breeding season. What sounds like joy is actually parental labor—he's working while he sings.
untoward transport
'Untoward' means improper or unseemly. She's noting that his ecstatic flight seems inappropriate given his responsibilities—but that's exactly the point.