Bird Groups

Bitterns: a sedge
Buzzards: a wake
Bobolinks: a chain
Coots: a cover
Cormorants: a gulp
Crows: a murder or horde
Dotterel: a trip
Doves: a dule or pitying (specific to turtle doves)
Ducks: a brace, team, flock (in flight), raft (on water), paddling or badling
Eagles: a convocation
Finches: a charm
Flamingos: a stand
Geese: a flock, gaggle (on the ground) or skein (in flight)
Grouse: a pack (in late season)
Hawks: a cast, kettle (in flight) or boil (two or more spiraling in air)
Herons: a sedge or siege
Jays: a party or scold
Lapwings: a deceit
Larks: an exaltation
Mallards: a sord (in flight) or brace
Magpies: a tiding, gulp, murder or charm
Nightingales: a watch
Owls: a parliament
Parrots: a pandemonium or company
Partridge: a covey
Peacocks: an ostentation or muster
Penguins: a colony, muster, parcel or rookery
Pheasant: a nest, nide (a brood), nye or bouquet
Plovers: a congregation or wing (in flight)
Ptarmigans: a covey
Rooks: a building
Quail: a bevy or covey
Ravens: an unkindness
Snipe: a walk or wisp
Sparrows: a host
Starlings: a murmuration
Storks: a mustering
Swans: a bevy, game or wedge (in flight)
Teal: a spring
Turkeys: a rafter or gang
Woodcocks: a fall

Woodpeckers: a descent