bevy(large group of birds) noun [UK: ˈbe.vi] [US: ˈbe.vi]
stormonoun {m}
covey(A group of 8–12 (or more) quail) noun [UK: ˈkʌ.vi] [US: ˈkʌ.vi]
flight [flights](group of doves or swallows) noun [UK: flaɪt] [US: ˈflaɪt]
flock [flocks](group of birds) noun [UK: flɒk] [US: ˈflɑːk]A flock of birds whirled across the sky. = Uno stormo di uccelli roteava attraverso il cielo.