What animals can be in a flock?

The term "flock" is most commonly associated with birds, but it can also be used to describe groups of other animals:

Birds:

* Common birds: Chickens, ducks, geese, pigeons, sparrows, robins, crows, etc.

* Waterfowl: Ducks, geese, swans, etc.

* Birds of prey: Vultures, hawks, eagles, etc. (These birds may gather in flocks, but they are more often called "kettles".)

Other Animals:

* Sheep: A group of sheep is called a flock.

* Goats: A group of goats is sometimes called a flock.

* Kangaroos: A group of kangaroos is sometimes called a mob or a troop.

* Fish: A school of fish can also be called a flock in some contexts.

Important Note: While the term "flock" is often applied to a large number of animals, it's not always used in a strict scientific sense. The specific name for a group of animals varies by species and context.