Fowl, and birds, fit this description.
ducks and gaggle
This link will give you many including raft and flock. http://www.ask.com/pets-animals/group-ducks-called-b01f5dc2e39a782b
A single baby duck is called a duckling, now make that plural. A group of ducks, however, is called a balding.
A rafter of turkeys.
Eagles, like most birds of prey, are solitary (excluding a mate). They might share territory, but they aren't a group like you see with geese or ducks.
The most common collective nouns are flock of geese or a gaggle of geese.When geese are in the air they are also referred to as skein, team, wedge or plump of geese.The term plump is only used when the birds are flying in close formation and the term wedge is derived from the V-formation the geese fly in.
A group of flying geese is called a skein. A gaggle is a group of geese not in flight.
Loons (or Divers in the UK) are not in the same group as waterfowl (Swans, Geese and Ducks). They are seagoing birds with longer, pointed beaks and legs even further back (to aid swimming).
A skein of geese is a group of geese IN FLIGHT
Gaggle of geese therefore you would find a goose in a gaggle.
a flock of geese
A gaggle of geese.