Answer: hummingbirds

AnswerCrossword Clue
HUMMINGBIRDSGroup that's called a charm
hummingbirdsHUMMINGBIRD, any member of the tropical family Trochilidae, very small birds of brilliant plumage and rapid flight
hummingbirdsA small nectar-feeding tropical American bird that is able to hover and fly backward, typically having colorful iridescent plumage