What two fundamental requirements must be met for geese to successfully colonize an environment?

Answer

A reliable source of water and accessible, short-cut vegetation for grazing

The distribution of geese is contingent upon two fundamental requirements: a reliable source of water, which serves as a refuge, and accessible, short-cut vegetation suitable for grazing.

What two fundamental requirements must be met for geese to successfully colonize an environment?
locationhabitatbirdgoose