If you do not have another bird, then the eggs are not fertile. Some birds get hormonal and wish to start a family and lay eggs. Do not take the egg(s) away unless they break it. You want the bird to sit on the egg(s) until they tire of them so they don't keep laying more and more to sit on.
Birds laying eggs have special needs. Look under others questions for more information about egg laying and what is suggested. That would be quicker than me repeating everything.
