A finch? Unless I'm thinking of the wrong animal, it's a bird
and it can lay fertile eggs that can be hatched. but you must have
a male finch with the female, otherwise any eggs it lays will be
Possibly about to lay eggs. Finch can be touchy about eggs
however and if not given proper nesting materials and shelter will
most of the time not sit the eggs. If she is fluffing up her
feathers could also be a cold or upper respiratory issue.